nastran error list

MD Nastran/MSC.Nastran Complete Error List Current Update: Jan 14, 2011 -----------------------------------------This section includes a description of all known errors and general limitations in all releases of MSC.Nastran and MD Nastran. The "version is the version on the f06 title page". Recent versions are sometimes referred to by the CD id as follows: MSC.Nastran 2005R3 = 2005.5.0 MSC.Nastran 2005R3b = 20005.5.2 MD Nastran R1 = 2006.0.0 MD Nastran R2 = 2007.0.0 MSC.Nastran 2007r1 = 2007.0.0 MD Nastran R2.1 = 2007.1.0 MD Nastran R3 = 2008.0.0 MD Nastran 2010 = 2010.1.0 MD Nastran 2010.1.1 = 2010.1.1 MD_MSC Nastran 2010.1.3 = 2010.1.3 If the Version = "GL" then this indicates a General Limitation which indicates a fix is not planned. Continuous updates to the error list are available to MD Nastran / MSC Nastran clients on the MSC SimCompanion web page http://simcompanion.mscsoftware.com/infocenter/index?page=content&id=KI8008006 The MSC Support pages can also be used to search for keywords to easily locate individual errors - http://simcompanion.mscsoftware.com

Known Error Product Abstract

CR 399 MSC / MD Nastran Eigenvalue Analysis - CEAD, QRG - Unexpected Normalization Complex eigenvalue analysis with the inverse power method of eigenvalue extraction will always normalize to MAX. POINT normalization requests are ignored. The Version 70.5 Quick Reference Guide has been updated to indicate that point normalization is only available for the det method. CR 785 MSC / MD Nastran MSGMESH, MSGSTRESS, MSGVIEW - MSGMESH, DIAG 29 - Infinite CPU Loop If MSGMESH is used with the link specification update feature, an infinite loop occurs. An infinite loop no longer occurs; UFM 53 will be issued indicating an incorrect format for the mesh entries. CR 868 MSC / MD Nastran Miscellaneous - PUNCH - Incorrect Format

Corrected Version 70.5

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Known Error Product Abstract Description

Corrected Version 69



Known Error

CR 868 STRESS(PUNCH) will not properly output the HEXA, PENTA, BEND, BEAM, TRIA6, or QUAD8 elements. Element margins of safety (ROD, CONROD, TUBE, and BAR elements) will produce poor punched formats if stress allowables are not given on the referenced MATi entries. CR 890 MSC / MD Nastran Grid Point Force - GPFDR - UFM 3008 The open core requirement for the GPFDR module can be as large as (6 X BUFFSIZE + 14 X number of grids) if the grids use a nonrectangular displacement coordinate system. For problems in basic coordinates, the grid requirement drops to 8 X number of grids. CR 1103 MSC / MD Nastran Dynamic Response - TRD, TRD1, FRRD, FRR - UFM 3005 If the MGIV method of real eigenvalue extraction computes modes for massless DOF with uncoupled stiffness terms, the eigenvalue is large (1.E+35) as it should be, but the generalized stiffness is 0.0 (it should also be 1.E+35). Null eigenvectors may be produced. An avoidance is to use PARAM,HFREQ or PARAM,LMODES to discard these bad modes in dynamics. CR 1357 MSC / MD Nastran Aeroelastic Analysis - GI - Poor Accuracy The linear splines used to connect structural and aerodynamic degrees of freedom are sensitive to modeling techniques, particularly on short-word machines. This included all machines except CRAY, CDC and NEC. It is good practice to have the spline axis coincide with the structural grid points, and to avoid discontinuities in the lines joining structural grid points by using separate splines on each side of the discontinuity. CR 1575

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Corrected Version GL

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Known Error


CR 1575 MSC / MD Nastran Dynamic Response - VDR - No Output If an OUTPUT(XYPLOT) command is in case control, but there are no other XYPLOT commands, all printed output requests are ignored. An avoidance is to put in XYPLOT requests or remove the OUTPUT(XYPLOT) command. CR 1679 MSC / MD Nastran Elements - QUAD4,TRIA3 - Wrong Answers When the MID4 option of the PSHELL card is used to simulate offset of the element centerline from the grid point plane, the element is somewhat too stiff. The error increases with the ratio of offset to element width. An avoidance is to use RBAR elements to model the offsets . CR 1712 MSC / MD Nastran Frequency Response Analysis - RANDOM - SWM 3002, UWM 979 If a non-existent point is referenced in an output request when there are multiple subcases, the RANDOM module will cease processing at that point and issue SYSTEM WARNING MESSAGE 3002. The following user warning message is now issued:


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0*** USER WARNING MESSAGE 979, AN XY-OUTPUT REQUEST FOR POINT OR ELEMENT ID 2000 -ACCE- CURVE IS BEING PASSED OVER. THE ID COULD NOT BE FOUND IN DATA BLOCK 102

Known Error Product

CR 1738 MSC / MD Nastran


Known Error Abstract

CR 1738 Grid Point Stress - Preface - UFM 603 If the SURFACE Case Control card has a continuation card, and the first words that appear on this card are OUTPUT SYSTEM, the error occurs. An avoidance is to start the continuation with another word. CR 1739 MSC / MD Nastran DMAP - DIAG 4 - Addressing ERROR If DIAG 4 is used on restart, the program may exit abnormally at the start of the run. The DIAG 4 cross reference output for Label Names will be incorrect if no labels exist in the DMAP, and the parameter section of the cross reference will not contain any parameters although parameters are present. An avoidance is to put a label in the DMAP. CR 1758 MSC / MD Nastran Cyclic Symmetry - Restarts - Various In superelement static cyclic symmetry (SOL 81), some restart paths do not function well. The following restart paths have been demonstrated to work, using the indicated input and DMAP Alters. Other types of restarts can be made, using these techniques. A. Conventional Superelement Restarts.

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Use the same techniques applicable to noncyclic symmetry superelement analysis. 1. Exit during Phase I. 2. Structural Changes in a Superelement. 3. Load Change Restart

B. Time Limit in a Harmonic Loop SET N = 0, residual only

Known Error

CR 1758 SEMG = N PARAM,RESDUAL,-1 (bulk data) Input all bulk data, or use PARAM,NODATA,-1 and delete all the bulk data except PARAM entries.

C. Loads Change in One Tip Superelement, Same Number of Loading Conditions, Sam Known Error Product Abstract CR 1759 MSC / MD Nastran Plotting - RF24D20, Superelement - Wrong Labels If SPC labels at grid points are requested for plotting ("GSPC") and resequencing is requested, the SPC labels are attached to the wrong components. An avoidance is to make a separate run for these plots without resequencing, and insert an EXIT after the RFAlter, or not request the SEKR operation in superelements. CR 1765 MSC / MD Nastran Cyclic Symmetry - CYCLIC2 - UFM 3005, UFM 4319, UWM 4359 There are two errors related to the use of the CYSUP Bulk Data entry when rotational symmetry is applied to a model with three or more segments. 1. If the rigid body rotations are to be supported, but there exists no stiffness at the components specified on the CYSUP entry, then UFM 3005 may be issued. But, if components 4 and 5 (out-of-plane rotations) are then constrained by an SPCi card or a GRID card, in order to avoid UFM 3005, then UFM 4319 will be issued. For components 4 and 5, an avoidance of UFM 4319 is to define rotational springs to ground (e.g., CELAS2). For component 6 (in-plane rotation), an avoidance of UFM 3005 is to apply a single-point constraint (e.g., SPCi), which is contrary to Remark 1 under the CYSUP Bulk Data entry description. b. The specif


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CR 1801 MSC / MD Nastran Plotting - PLOT - SFM 4276 If modern plate elements are present, and SHRINK or DIAG 34 are requested, the error may occur. CR 1802 MSC / MD Nastran Miscellaneous - Preface - CPU Loop If the THRU range on an input card is larger than 131,071 for CDC/7600 and CYBER computers, or 8,388,608 for CRAY computers, the error may occur. It has been observed on a PLOAD2 card with a larger range. (Cyber,CDC 7600,CRAY only) An avoidance is to split the THRU range into smaller sets, so that none exceeds the limit. CR 1803 MSC / MD Nastran Elements - PQUAD4 - UFM 2010 If both PQUAD4 and PSHELL (and/or PCOMP) cards exist in the same deck, the misleading message references PSHELL cards. The PQUAD4 card is obsolete, and is removed from current documentation. It should be replaced with the PSHELL card. The PQUAD4 card will be deleted from the code on a future system. An avoidance is to replace PQUAD4 card with PSHELL cards wherever they exist as they cause various confusing errors. CR 1804 MSC / MD Nastran Superelements - SELA - Wrong Answers




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Known Error

CR 1804 For large problems, if the first several upstream load vectors are null, the remaining upstream load vectors may be ignored. This can be detected with DIAG 20. An avoidance is to place a token load on all upstream superelements.


CR 1805 MSC / MD Nastran Elements - PCOMP - Wrong Answers For layered composite materials with an unsymmetric layup, the generated transverse shear matrix MID3 is incorrect. CR 1806 MSC / MD Nastran Database - LOAD/UNLOAD - Wrong Answers If a database is unloaded to a sequential file using the DBMGR //3 command, then restored to a direct access file using the load command, any keywords stored in the database dictionary will be lost. Most keywords are only for diagnostic use (i.e., "SEMGDONE"), and will cause no further errors. The one exception at present is the keyword "NOSETRUE", which appears when all grid points are in the residual structure. This will cause the fatal message above on PARAM,NODATA or PARAM,DLOAD restarts. An avoidance is to use the following alter for this type of restart: ALTER 10 $ MSC/61B, AFTER DBMGR //11 SETVAL //V,N,NOSE/-1 $ CR 1807 MSC / MD Nastran Matrix Methods - FBS, Method 2 - Wrong Answers If a passive group appears within the first 20 columns of a matrix, some terms may be dropped. The error was first observed on a large static reduction. An avoidance is to block Method 2 by using the NASTRAN card entry FBSOPT=-1,




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Known Error

CR 1807 when passive columns occur.


CR 1808 MSC / MD Nastran Database - DBSTORE - DBM 288 This error occurs when more than 32,768 GINO blocks are stored in a single database, and a store of an equivalenced file is attempted. (IBM only) An avoidance is to use several databases, none larger than 32,000 GINO blocks. CR 1809 MSC / MD Nastran Heat Transfer - HBDY - Wrong Answers SOL 74 gives wrong answers for nonlinear HBDY types AREA3 and AREA4. An avoidance is to use the POINT option instead. CR 1810 MSC / MD Nastran Elements - Midside Nodes - Wrong Answers The QUAD8, TRIA6, and HBDY elements use an incorrect average temperature for material properties when the number of active grid points is not the same for all elements of the same type. (Deleted midside grid points are not active grid points; all connected grid points are active.) An avoidance is to delete the same number of nodes on all elements of the same type in the model. CR 1811 MSC / MD Nastran Dynamic Response - SDR3 - UFM 4605 If DISP, VELO, or ACCE are requested for a set of grid points and the


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Known Error

CR 1811 set is empty, USER FATAL MESSAGE 4605 occurs. An avoidance is to remove output requests for empty sets.


CR 1812 MSC / MD Nastran Miscellaneous - Multiple Runs - ITRENT 1111 If two or more MSC/NASTRAN executions are made in the same job, the error may occur. (Univac only) An avoidance is to submit each run as a separate job. CR 1813 MSC / MD Nastran Response Spectra - PARAM,RSPECTRA,0 - Wrong Answers The response spectra option provided in transient analysis gives wrong answers for acceleration spectra at high frequencies. The peak accelerations for high frequency oscillators will not match the results of a transient analysis where a stiff spring and small mass have been attached to the structure to directly represent the oscillator. The displacement and velocity from the response spectra results will match those of the oscillator represented with spring and mass. Avoidance: The user should set the value of delta t on the TSTEP input such that 10 time steps occur during one cycle of oscillation for the highest frequency of interest.


Known Error Product Corrected Version Abstract

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CR 1814 MSC / MD Nastran Matrix Methods - MPYAD - Overflow If incompatible matrices are input to the MPYAD module, and one is of form 3, an unclear diagnostic results. A good practice is not to input form 3 matrices to MPYAD, as this capability will be removed in a future system. The form 3 matrix [A] can be changed to form 6 by the following steps: ADD A, /A6 $ ADD WILL GENERATE PROPER MATRIX EQUIV A6,A/ALWAYS $ A6 REPLACES A


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CR 1815 MSC / MD Nastran Dynamic Response - XYPUNCH - Missing Output The PCHRESP parameter described on p. 4.3-23 (2/15/82) of the MSC/NASTRAN User's Manual is not implemented. The function it was to perform (punch TABLED1 cards based on output data) can be performed with a DMAP Alter. Delete the XYTRAN module statements, and replace them with an identical statement except for the sixth parameter. Set it to S,Y,PCHRESP=0. (MSC/62 only) CR 1816 MSC / MD Nastran Material Nonlinearity - SOL 66 - Wrong Answers If the large displacement option is used, and more than one rotation is enforced at a grid point with SPCD cards, the transformations are incorrect when increments are specified on the NLPARM card. An avoidance is to use separate subcases, each with a single increment, rather than many increments on a single subcase. (MSC/62 only) CR 1817 MSC / MD Nastran Transient Response - TRD1 - UFM 3050 If an IC card is selected in case control in SOL 31, which is illegal, the wrong fatal message ("insufficient time") is printed. The correct text can be found under UFM 3051, listed in Section 6 of the U.M. CR 1819 MSC / MD Nastran Elements - EMG - EMGPOM If HEX8 and HEX20 elements are used with other elements, and there


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Known Error

CR 1819 is insufficient memory available, unclear diagnostics may result. (IBM, Cyber, CDC/7600, CRAY, Univac only) An avoidance is to request more memory.


CR 1820 MSC / MD Nastran Database - DBSTORE - SFM 4167 The maximum number of database dictionary entries is influenced by the fourth input parameter for the DBMGR command when creating the database. The default value will almost always result in more than one GINO block being used for the dictionary. If the dictionary has only one block, the database will be unusable. (Univac only) An avoidance is to insure that the dictionary is assigned more than one block. This can be determined from SIM 4162, under the "WRITTEN" entry. This number should be greater than 1 when the database is created. If it is not, increase the fourth input parameter to at least twice the value printed under the "NUMBER OF ENTRIES MAXIMUM" for SIM 4162. CR 1821 MSC / MD Nastran Superelements - Documentation - Wrong Answers The DMAP Alter described in the Application Note of January 1982 titled "Inertia Relief in Superelement Analysis" has a typographical error that causes inertia loads of the wrong sign. The second to last statement on page 7 should be changed from SOLVE QRR,QR/CRX/ $ etc. to SOLVE QRR,QR/CRX//-1 $ Update pages for the application note will be delivered with the next newsletter. CR 1822 MSC / MD Nastran Material Nonlinearity - MID3 - Wrong Answers


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Known Error

CR 1822 In SOL 66, the values output for transverse shear forces for the QUAD4 and TRIA3 elements are incorrect if MID3 (field 7 on the PSHELL card) is nonzero. An avoidance is to leave MID3 blank. CR 1823 MSC / MD Nastran Miscellaneous - 1VARY - UFM, CARD TO VARY NOT FOUND Multiple 1VARY cards for the same type of data card may not sort correctly. CR 1824 MSC / MD Nastran Matrix Routines - Method 3 - Various GINO Messages If Method 3 matrix multiplication is selected, and there is not sufficient memory available, various system errors may occur. The method selected can be determined by DIAG 19. Avoidances are to increase memory, or block Method 3. CR 1825 MSC / MD Nastran Elements - Punched Output - Extra Output If output is requested in punched format, elements whose printed formats include more than one element per line will also print the last few elements, if they do not fill the line. CR 1826 MSC / MD Nastran Cyclic Symmetry - SOL 77 - Parameter Print If illegal loads are requested in buckling analysis using cyclic symmetry, the program branches from the CYCLIC1 module to the PRTPARM module, then prints all parameters. This condition can be detected by noting that parameter GEOM3C has the value

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Known Error Product Abstract Description Known Error Product Abstract



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Known Error

CR 1826 minus one. One such case was observed when GRAV entries were selected. This user error now results in a meaningful fatal message: 0*** USER FATAL MESSAGE 4342, THE LOAD BULK DATA CARD GIVEN BELOW IS INCONSISTENT WITH SPECIFIED ANALYSIS HARMONICS OR SEGMENTS OR SYMMETRY TYPE.

An avoidance is to check the load entry types against the limitations described in Section 3.2 of the Application Manual. Known Error Product Abstract CR 1827 MSC / MD Nastran Grid Point Stress - Branched Surface - Wrong Answers When requesting stresses for a surface with branches using geometric interpolation without a value for tolerance, some stresses at branch points may be incorrect. An avoidance is to use the BRANCH option. CR 1828 MSC / MD Nastran Heat Transfer - CFTUBE - Wrong Answers If the CFTUBE is used in SOLs 24, 61, or 62, which is illegal, SOL 24 produces wrong answers, and the others fatal error message GETSTB ERROR CODE 1604 or some equivalent message in the SSG3 module. CFTUBE elements are supported only in SOL 74. CR 1829 MSC / MD Nastran Database - DBMGR, DBSTORE - IO6600 F.E. 1203


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Known Error

CR 1829 Any database file longer than 262, 143 PRUs may fail with this error on restart. An avoidance is to restrict all database files to be under this size. The size of a database is specified in GINO blocks. A good approximation of the maximum allowable number is one million/SYSBUF. (SYSBUF is the size of the GINO buffer, which has a default of 1792.) Thus with default buffer size, limit database files to about 8900 blocks. (CDC/Cyber running under NOS only.)


CR 1830 MSC / MD Nastran Aeroelastic Analysis - FA1 - Wrong Answers The ATEIG subroutine for eigenvalue solution has a limit of 30 iterations. If convergence is not achieved, the subroutine continues with intermediate results without giving a warning message. This yields incorrect eigenvalues for that condition. This has been detected when implausible real eigenvalues were produced when complex eigenvalues were expected. CR 1831 MSC / MD Nastran Superelements - UMERGE - SFM 3007 In SOL 62, if a data recovery restart is made while performing no Phase I operations, the error will occur. An avoidance is to add PARAM,NORSET,-1 above the subcase level. CR 1832 MSC / MD Nastran Static Analysis - RF24D13B - SFM 4275 The error occurs when the RF Alter is used for restarts where only output requests are changed, but not loading conditions. The RF Alter should not be used for this condition. A standard restart may be used.


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CR 1833 MSC / MD Nastran Material Nonlinearity - SOL 66 - UFM 1105 If CHKPNT YES appears in the Executive Deck, the error may occur at random places. If checkpointing is required, use the alter: ALTER 1 $ PARAM //DIAGOFF//47 $ In general, it is more efficient to recover the input data from the database rather than use checkpointing. CR 1834 MSC / MD Nastran Elements - ROD,HEXA - Wrong Answers In SOLS. 64, 66, and 99 the following errors occur: A. ROD elements give wrong answers if they have torsion properties (J>0.), and the element changes direction, even slightly, due to large deflection effects. B. HEXA elements give wrong answers when two of the axes X,Y, or Z (see U.M. p. 2.4-70) are of nearly equal length (that is, the element has almost square faces) and are not perpendicular. (Part B fixed in Version 62A) CR 1835 MSC / MD Nastran Plotting - XYPLOT - Poor Efficiency If a plot is made of a constant function, such that the maximum and minimum y values are the same, the automatic scaling algorithm may converge very slowly. This problem has been observed only on CYBER computers, where it appeared to be a CP loop. An avoidance is to set one of the scales manually with the plotting commands YMIN=0.0; YTMIN=0.0; YBMIN=0.0. CR 1836 MSC / MD Nastran


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CR 1836 Restarts - Preface - IO66RD F.E. 314 For CYBER computers using the SCOPE 3.4 operating system, the error will occur if the buffer size is greater than 512 words, and the NPTP is sent directly to TAPE. An avoidance is to use the "L" parameter on the "REQUEST, NPTP..." card. CR 1837 MSC / MD Nastran Executive - SOL 76 - SFM 14 All of the solution sequences will compile in the recommended default region of 200K octal except SOL 76. It will compile with an RFL of 205K octal. (CYBER only) CR 1839 MSC / MD Nastran Heat Transfer - SPCD - Wrong Answers If an enforced temperature is input on SPC or SPCD cards in SOL 74, wrong answers result. An avoidance is to place the degree of freedom on a SPC1 card, and set its value with a TEMP Bulk Data card. CR 1840 MSC / MD Nastran Dynamic Response - OLOADs - Missing Output If plots or print of OLOADs are requested in SOLs 70-72, 75, or 76, and there are no extra points, the error occurs. An avoidance is to place the following alter before the DMAP statement DBSTORE PGD, etc. For SOL 72, for example, the alter is: ALTER 974 $ MSC/62 EQUIV PP, PGD/NOUE $


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CR 1841 MSC / MD Nastran Matrix Methods - DECOMP - LOGIC ERROR 582 For unsymmetric decomposition with spill, the error may occur. (CYBER only) Changes in region size sometime eliminates the problem. CR 1842 MSC / MD Nastran Sequencing - SEQP - Various System Errors If the resequencing module spills in the SEQMR subroutine, various system errors occur. (CRAY, VAX, UNIVAC only). Avoidances are to: A. Increase the memory request, or B. Use PARAM, MPCX, -1. CR 1843 MSC / MD Nastran Elements - BEND - Wrong Answers The BEND element produces incorrect element forces and stresses when thermal loads are applied to them. CR 1844 MSC / MD Nastran Elements - PCOMP - Wrong Answers The interlaminate shear stresses are incorrect for laminae that have nonzero orientations. CR 1845 MSC / MD Nastran Virtual Mass - XYPLOT - Missing Plot Output




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Known Error

CR 1845 XYPLOT requests for MPRES output are ignored. An avoidance for SOL 31 is: ALTER 548 $ AFTER MDATA MSC/61, MSC/62 SDR3 OEP,,,,,/OEP2,,,,,/ $ XYTRAN XYCDB,,,,OEP2,/XYPPLOT/SOLTYPE/DSET/S,N,PFILE/ S,N,CARDNO/S,N,NOPLOT $ COND NOPPLOT,NOPLOT $ XYPLOT XYPPLOT // $ LABEL NOPPLOT $ Other solution sequences may also use this alter if appropriate changes are made to the alter line number. This error is fixed in the sss solution sequences; however the xyplot request is pres not mpres.

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CR 1846 MSC / MD Nastran Transient Nonlinear Analysis - XYPLOT - Missing Plot Output In SOL 99, an XYPLOT requests may be ignored when there is no printed output requested. An avoidance is to request at least one grid point for printed output.


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CR 1847 MSC / MD Nastran Material Nonlinearity - TABLES1 - Wrong Answers In solutions 66 and 99, if the stress-strain curve does not pass through the origin for FORM=1 the data is accepted, producing unrealistic answers. On future systems, such input will cause a fatal error. CR 1848 MSC / MD Nastran Superelements - SEP2 - UFM 4222 If SEUSETi cards reference interior points, the error occurs. They may be applied to exterior points. In


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Known Error

CR 1848 future systems they may also be applied to interior points.


CR 1849 MSC / MD Nastran Superelements - SEUSET - UFM 315 The card description of this card in Section 2.4 of the User's Manual has fields 2 and 3 interchanged. The correct format is: SEUSET, (SEID), (SNAME), ...


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CR 1850 MSC / MD Nastran Cyclic Symmetry - GPFDR - UWM 2342,2354 In SOL's 81 through 83, the message results when GPF0RCE or ESE output is requested. An avoidance is to delete the DMAP line number for the GPFDR module, and change the APP parameter to APP1. For example, ALTER 822,822 $ SOL 81, MSC/62 GPFDR CASEDR,UGVS,KELM,KDICT,ECTS,EQEXINS, GPECT,PG,QGS,BGPDTS,SILS,CSTMS,VELEM/ONRGY1, OGPFB1/APP1/V,Y, TINY $


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CR 1851 MSC / MD Nastran Matrix Routines - MPYTIM - Integer divide by zero If large problems are run with small memory requests, the error may occur. An avoidance is to increase the memory request. CR 1852 MSC / MD Nastran


Known Error Product



CR 1852 Restart - Dynamics - No Damping If a restart is made from SOL 24 to a dynamics solution sequence, any damping cards present in SOL 24 (i.e. CVISC) may be ignored. An avoidance is to delete one damping card on restart and reinsert it. CR 1853 MSC / MD Nastran Executive - 3380 Disk Drives - Various System Errors (21OCT82) Users may not run any version of MSC/NASTRAN prior to MSC/62 on an IBM configuration that references 3380 disk drives. A variety of I/O related fatal messages may result from the earlier version's inability to compute blocksize correctly on these drives. The most likely messages are one or more of the SFM 4212 codes. Some users have had limited success by using half-track blocking with Version 61B. However, use of Version 62 is the recommended procedure. Furthermore, users may not copy (using IBM utilities) a MSC/NASTRAN database existing on non 3380 disks to a file usable by MSC/NASTRAN on a 3380 disk. (IBM only) This procedure may be accomplished however, by using a short MSC/NASTRAN DMAP sequence to read the existing file from the non 3380 disk and then write a CR 1854 MSC / MD Nastran Material Nonlinearity - EMG - SFM 3007 If a SOL 66 run restarts from a prior run which had no updates of the stiffness matrix, the recovered stiffness matrix may be incorrect. An avoidance is to restart the run from the beginning. CR 1855 MSC / MD Nastran

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CR 1855 Material Nonlinearity - Contour Plots - SFM 4276 In SOL 66, when contour plots are requested for both linear and nonlinear elements, SFM 4276 will occur. Also, if all elements are linear, SFM 3002 might occur. An avoidance is to make linear elements into nonlinear elements by setting the yield stress very high. CR 1856 MSC / MD Nastran Superelements - Multiple File databa - Purge of Upstream database If PARAM, DBSET1 is set to a value greater than zero, the entire upstream database will be purged during the SEKR operation. An avoidance is to repair two database purge statements that are in error. For SOLUTION 61, the fixes are: ALTER 440,440 $ MSC/62 DBMGR //5/MODEL/SEID/0/DBSET1//GO$ ALTER 452,452 $ DBMGR //5/MODEL/SEID/0/DBSET1//KTT$ The change involves inserting a "0" parameter before DBSET1, and reducing the number of slashes after DBSET1 from three to two. Two similar statements will be found in all the superelement solution sequences, at different line numbers. They can be found by use of DIAG 14, followed by a search for statements of the form: DBMGR //5... GO $, and DBMGR //5..... KTT $ This error does not affect superelement run CR 1857 MSC / MD Nastran Miscellaneous - RF24D40 - Various Fatal Messages or Wrong Answers If a user-supplied DMAP loop is provided around this alter, and the FBS module is within this loop it will result in various fatal messages or wrong answer after the first pass. An avoidance is to copy and modify the alter by inserting the following two DMAP statements; After the first ALTER statement insert: PARAM //STSR/V,N,SAVE74/74

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Known Error

CR 1857 $ Just after the third occurrence of the SDR2 module insert: PARAM //STSR/V,N,SAVE74/-74 $


CR 1858 MSC / MD Nastran Miscellaneous - Demand Runs - FATAL MESSAGE 202 If two or more MSC/NASTRAN executions are made in the same demand session, the error may occur. (Univac only) An avoidance is to free all MSC/NASTRAN files (i.e. PRIXX, and SECXX's) between executions in demand mode. CR 1859 MSC / MD Nastran Miscellaneous - IBM - Compilation Errors The UTIL data set which is the third data set on the IBM deliverable tape was incorrectly blocked at 13030 bytes. This is acceptable except for installations having only DASD devices which support shorter maximum blocksizes (i.e. 3340 devices). At these sites the UTIL data set, as issued, cannot be restored. The most heavily used programs in the UTIL data set are DECKEDIT, NASTPLOT and TECKPLT. Of these, DECKEDIT and NASTPLOT are available in the NASTRAN data set which is the second file on the deliverable tape. TECKPLT is identical with the program as issued in Version 61 and could be obtained from that source. If any other programs are required from the UTIL data set, or any of the above solutions are unacceptable, please contact MSC. (IBM only) An avoidance, i CR 1860 MSC / MD Nastran Material Nonlinearity - TA1 - Wrong Answers or Overflow


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Known Error

CR 1860 In SOL 66 and 99, Orthotropic Materials defined by MAT2 or MAT9 do not work in SOL 66 or SOL 99 for any type of elements.


CR 1861 MSC / MD Nastran Geometric Nonlinearity - EMA - Overflow In SOL 64, 66, or 99, if the static displacement vector provided to the second subcase for differential stiffness calculations is null, the results of the second subcase may be implausibly large, or the EMA module may first terminate due to overflow. An avoidance is to request loads in the first subcase that will produce a nonnull displacement vector. CR 1863 MSC / MD Nastran Superelements - Dynamics - No Damping The Application Note of May 1981 describes a method for obtaining differential stiffness effects in dynamic analysis by performing a static analysis in SOL 64, followed by a special restart into SOL 63, or SOL's 67 through 72. At present, damping is not computed in SOL 64, and may not be computed on the restart run without erasing the differential stiffness matrix. The following alter will provide damping: Alter for damping in SOL 64 /61B or /62 ALTER 62,62 $ MSC/61B/62, SOL 64 EMG EST1,GCSTMS,GMPT,GDIT,GGEOM2,,,/ KELM1,KDICT1,MELM,MDICT,BELM,BDICT/ S,N,NOKGG=1/S,N,NOMGG=1/S,N,NOBGG=1/// V,Y,COUPMASS=-1 $ ALTER 68 $ EMA GPECT,BDICT,BELM,GBGPDT,GSILS, GCSTMS/BJJ, / $ DBSTORE BJJ//MODEL/0 $ CR 1864


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Description

Known Error


CR 1864 MSC / MD Nastran Superelements - Documentation - H/SEA The following errors have been found in the Handbook for Superelement Analysis, for Version 61. 1. Appendix J, page 3 Deck SEH616A Add after "DBSTORE EQEXINS..." DBMGR //7/////-2/UGVS/ULV $ This statement is needed to provide the presence of ULV for the next run, Deck SEH617. Its absence causes the data recovery run for the external superelement to terminate without producing output. 2. Appendix J, pages 4 and 5 Several decks use the DBMGR //3 and DBMGR //4 commands. They use the default values for the third parameter, used for "search control". The default value allows several blocks with the same name to appear in the data base, which can lead to baffling fatal errors or wrong answers. It is good practice to set the third parameter CR 1865 MSC / MD Nastran Geometric Nonlinearity - SOL 66,99 - Wrong Answers If SOL 66 or 99 is used with only LGDISP, the beam element has incorrect stress recovery output, if I1 does not equal I2. Output (recovered) stresses are only affected, and the solution is still correct. An avoidance is to either: 1. Make a "Dummy" material nonlinear group (w/yield stress set to a high value) 2. Run only with I1 equal to I2. CR 1866 MSC / MD Nastran Material Nonlinearity - SOL 66, 99 - Wrong Answers In SOL 66 or 99, a beam element with thermal loads and nonbasic coordinates


Description



Description



Known Error

CR 1866 used by its end grid points gives incorrect results. An avoidance is to use the basic coordinate system to define the beam element grid points.


CR 1867 MSC / MD Nastran Cyclic Symmetry - Restarts - Missing Modal Deformation Plots In SOL 48 restarts, requests for modal deformation plots are ignored unless the requests were also made in the cold start. The following alter is an avoidance: ALTER 197 $ MODTRL FCASEBK1 /////1// $


Description


CR 1868 MSC / MD Nastran Grid Point Stress - Subcases - Wrong Answers When there are multiple subcases in a run and in a particular subcase there is a stress request but not a grid point stress request then the subsequent subcase grid point stress results will be wrong. This is a stress recovery error only and does not effect the solution. An avoidance is to put grid point stress requests (even if for only one element) in every subcase. CR 1869 MSC / MD Nastran Geometric Nonlinearity - SSG1 - GINO Fatal Message 3029 In SOL 64, if only GRAV Loading is being used, GINO Fatal 3029 will occur in Subcase 2. An avoidance is to include a dummy load. CR 1870 MSC / MD Nastran


Description



Known Error Product



CR 1870 Miscellaneous - Composite Element wi - Incorrect Resutlsts Thermal loading at grid points (using TEMP or TEMPD) gives wrong temperature gradients and corresponding incorrect results in composite elements. An avoidance is to apply TEMP loads directly to elements. CR 1871 MSC / MD Nastran Cyclic Symmetry - Thermal Loads - Wrong Answers or UFM 4587 Temperature load cases, i.e., TEMP(LOAD)=j in SOL 81, combined with other types of loads will provide incorrect force and stress output because the thermal strains are not correctly handled. If temperature loading only is requested, then UFM 4587 will occur. This situation arises because the identification number of the temperature load "j" is not included in the CASEDR data block output by the SEDR module. An avoidance is to utilize the following alter: ALTER 642 $ MSC/63 $ALTER 653 $ MSC/62 TABEDIT CASEDR, CONT,,,/A1 $ EQUIV A1, CASEDR/ALWAYS $ in the Executive Control Deck, and to include the following DTI cards in the Bulk Data Deck: DTI, CONT, 1, CR, [1] , DW, 7, 7, 1, DTI1 +TI1, "j" ENDREC DTI, CONT, 2, ER, ENDREC The number in brackets, i CR 1872 MSC / MD Nastran Matrix Methods - MPYAD - Mode Error 1 This error condition may occur when multiplying large matrices. It is further characterized by aborting with a "P address" between 36000 and 37400. The P address is printed out in the dump on the line that starts "P ="). This error was reported to be fixed in Version 62A, in a prior report.

Description



Description



Description

Known Error

CR 1872 Field usage of Versions 62A shows that the fix was not fully effective. (CYBER, CDC/7600 only) Avoidances are to: 1. RFL up or down by about half of the largest dimension of any input matrix. 2. Set the REAL parameter on the NASTRAN card to core size minus the largest dimension of any input matrix. Core size may be determined from DIAG 13. 3. Deselect Method 1 and Method 1T. This should be done locally using a DMAP Alter statement, rather than on the NASTRAN c


CR 1873 MSC / MD Nastran Miscellaneous - PARM Field - Incorrect PARMs The PARM option provided in the PROC delivered with NASTRAN allows up to 100 characters of input, based on inherent JCL limits. (See Section 7.6.2.1 of the A.M.) Submitting more data results in JCL fatal error messages. MSC/NASTRAN will process less data than this, however, with the remaining data set to unpredictable values. The equation for the limit of data properly processed by MSC/NASTRAN is 4S*7+(OTHERS)*4 NGMAX where NGMAX = NCON + NDV


Description

and NAVC = # of active and violated constraints considered by the DOT algorithm NASIPE = # of active side constraints NCON = # of retained constraints passed to the optimizer NDV = # of design variables Generally, DOT selects a small set of NCON for NAVC. In the case that encountered the failure, there were a large number of properties an


CR 4469 MSC / MD Nastran Data Recovery - DTI,INDTA - Composite Stress Sorting Composite ply results processing does not support the DTI,INDTA Bulk Data entry.


Description

Avoidance: The following DMAP statement needs to be modified in each applicable Unstructured Solution Sequence and in the subDMAP SEDRCVR as follows:

Known Error

CR 4469 (old) STRSORT ES1C,/OES1C/V,Y,NUMOUT1=-2/V,Y,BIGER1=0.0 $ STRSORT EFIT,/OEFIT/V,Y,NUMOUT2=-2/V,Y,BIGER2=0.0 $ (corrected) STRSORT ES1C,INDTA/OES1C/V,Y,NUMOUT1=-2/V,Y,BIGER1=0.0 $ STRSORT EFIT,INDTA/OEFIT/V,Y,NUMOUT2=-2/V,Y,BIGER2=0.0 $ Alternatively, the analyst may use the default ply sorting with parameters NUMOUT1,NUMOUT2,BIGER1, and BIGER2. This gives sorting on the ply stresses and strains.


CR 4476 MSC / MD Nastran Elements - PSOLID - UWM 5460 If the standard isoparametric integration (ISOP=FULL) is desired for the CHEXA or CPENTA element with midside nodes, and the IN field is blank on the PSOLID entry, then MSC/NASTRAN assumes that the user wants to use bubble functions. "USER WARNING MESSAGE 5460, ILLEGAL OPTION ON PSOLID ID = ***, FOR BUBBLE FUNCTION. ONLY REDUCED INTEGRATION IS ALLOWED" is issued, and the run will proceed using reduced integration. The same warning message is issued for CTETRA elements if the IN field is blank even though bubble functions and reduced integration are not supported by this element. The run will continue with the default integration options. Avoidance: To perform standard isoparametric integration on CHEXA and CPENTA elements with midside nodes, IN must be set to 3 or THREE. To avoid


Description


CR 4482 MSC / MD Nastran Miscellaneous - CONVEX Only - Unacceptable Input Filenames MSC/NASTRAN on the CONVEX will not accept the following filenames:


Description

t.dat at.dat dat.dat

Known Error

CR 4482 Avoidance: Do not use the above names.


CR 4484 MSC / MD Nastran Cyclic Symmetry - GPFORCE, GPFDR -SFM 3001, FILE 108 NOT IN FIST Grid point force output is not available in upstream superelements in cyclic symmetry statics (SOLs 81 and 114). A GPFORCE request results in the message "SYSTEM FATAL MESSAGE 3001 FILE 108 NOT IN FIST" being issued from the GPFDR Module. Avoidance: A DMAP avoidance is under investigation. CR 4486 MSC / MD Nastran Nonlinear Analysis - Hyperelastic, PLSOLID, FORM=MIXED - No Convergence When a displacement coordinate system (CD) is specified on any of the grid entries connecting a HEXA hyperelastic (PLSOLID) element, results may either converge slowly or no convergence occurs when FORM=MIXED is selected. Avoidance: Use the default FORM=ISOP.


Description



Description


CR 4491 MSC / MD Nastran DMAP - DRMS1 - SFM 4276, EC 7777 The message "SYSTEM FATAL MESSAGE 4276 ERROR CODE 7777" may occur during data recovery of eigenvalues analysis in the DRMS1 module. This error is due to numerical underflow or overflow and is highly machine dependent. This error has only been observed on the DEC VAX(VMS) release of MSC/NASTRAN. Avoidance: Run the job on another machine.


Description

Known Error Product

CR 4494 MSC / MD Nastran



CR 4494 Acoustic Analysis - Wrong Answers - SFM 5401 When the surfaces of the fluid cavity are connected to a structural surface containing two or more distinct elements (i.e. the fluid is interfacing with HEXA elements on one surface and QUAD elements on the other surface ) then wrong answers may be produced for the FL./STR. INTERFACE CHECK and/or SFM 5401 may occur. Avoidance : This is a general limitation of MSC/NASTRAN. The acoustic cavity must be surrounded by plate or solid elements but not both.

Description


CR 4496 MSC / MD Nastran Acoustic Analysis - CHACAB - UFM 4422, SFM 4276 EC 7777, Wrong Answers If the table input features of the PACABS Bulk Data entry (TIDi fields) are used to define the reactance for the CHACAB absorber element then, depending on the machine, the job may fail and issue either the message "USER FATAL MESSAGE 4422, NUMBER OF NULL ROWS IN THE DYNAMIC MATRICES IS NOT EQUAL TO THE NUMBER OF NULL COLUMNS" or "SYSTEM FATAL MESSAGE 4276 EC 7777". Incorrect DB pressure values may also be produced. Avoidance: Instead of using the TABLEDi features to calculate the stiffness and mass values for the absorber element, specify the k, m and b values explicitly on the PACABS Bulk Data entry.


Description


CR 4498 MSC / MD Nastran Documentation - LINE, MAXLINES - SFM 3019 The message "SYSTEM FATAL MESSAGE 3019 MAXIMUM LINE COUNT EXCEEDED IN SUBROUTINE PAGER LINE COUNT EQUALS ****" is misleading, because the code is actually counting the pages. If the user specifies LINE=X and MAXLINES=Y, then the max number of pages that will be output is Y/X, regardless of how many lines are actually on each page. When the code counts more pages than Y/X, it will issue the message above. If the user specifies a value for LINE that is greater than the actual number of lines per page, then the job fails at a lower line count than MAXLINES.


Description

Known Error

CR 4498 Avoidance: Specify a correct value for LINE.


CR 4503 MSC / MD Nastran Case Control - SDR2, MODES - SFM 3002 In MSC/NASTRAN Version 67.5 if the MODES command references an eigenvector that does not exist, the run fails and the message "SYSTEM FATAL MESSAGE 3002 MODULE=SDR2 EOF ENCOUNTERED WHILE READING DATA SET PHG" is output from the SDR2 module. Prior versions of MSC/NASTRAN correctly ignore a MODES command that is beyond the number of eigenvectors calculated. Avoidance: Remove the additional subcase and MODES command. CR 4506 MSC / MD Nastran Optimization/Design Sensitivity - UMERGE1 - SFM 4276, EC 1409. If an optimization or design sensitivity analysis contains EPOINTs as is required for the Lagrange multiplier large mass method, then the execution fails in the UMERGE1 module and the message "SYSTEM FATAL MESSAGE 4276 ERROR CODE 1409" is output.


Description



Description

Avoidance: The UMERGE1 DMAP statements at lines 65, 66, and 67 of subDMAP DYNSEN must be ALTERed to set the IOPT parameter to 1 as follows: from: UMERGE USETD,EGMG,,,/EGMP/'P'/'G'/'E' $ to: UMERGE USETD,EGMG,,,/EGMP/'P'/'G'/'E'/1 $

Known Error Product

CR 4525 MSC / MD Nastran Documentation/Optimization - DEQATN - UFM 201, SFM 217, UFM 224, UFM 5199 Input errors on the DEQATN Bulk Data entry often result in poor messages. The following messages have been encountered when invalid symbols such as a "[" are used or the restriction against large field format is violated on the DEQATN entry: "USER FATAL MESSAGE 215 (PRER2O) BINARY OPERATORS

Corrected Version 70.5 Abstract

Description

Known Error

CR 4525 CANNOT BE THE FIRST SYMBOL FOUND IN AN ARITHMETIC LOGICAL EXPRESSION" or "SYSTEM FATAL MESSAGE 233 (PRSPOP) UNDERFLOW OCCURRED DURING PROCESSING OF OPERAND STACK" or "USER FATAL MESSAGE 5199. ON THE ABOVE BULK DATA FREE FIELD CARD AN INTEGER OR A BCD FIELD HAD MORE THAN EIGHT CHARACTERS". Avoidance: Review the requirements of the DEQATN entry documented in the MSC/NASTRAN User's Manual and modify the DEQATN entries as necessary.


CR 4528 MSC / MD Nastran Parallel Matrix Methods - SPARSE, PARALLEL - Segmentation Fault In Version 67.5 of MSC/NASTRAN on the CONVEX C3800 computer, if parallel sparse decomposition is selected, the job fails and no message is printed to the F06 output file. The log file indicates a "Segmentation Fault" error in the routine relcpuu. Avoidance: Presently the only avoidance is to run MSC/NASTRAN within csh and specify the csh command "limit concurrency 4" before execution. The error will be fixed for Version 68 by limiting the maximum number of CPUs to 4 when using parallel sparse decomposition. CR 4529 MSC / MD Nastran Sequencer - SEQP, PARAM,NEWSEQ,6 - SFM 4276 FILPOS EC 1044 An error exists in the nested dissection option of the sequencer module. This option is selected by setting PARAM,NEWSEQ,6 in Version 65E, 66, 66A, 66B, 67, or 67.5 of MSC/NASTRAN. The option is also available by setting PARAM,NEWSEQ,8 in Version 67.5 whenever sparse decomposition is also selected. This error causes the job to fail in the SEQP module and the message "SYSTEM FATAL MESSAGE 4276 FILPOS ERROR CODE 1044" to be output. The error occurs only when superelement groups exist in the model and when the number of grid points in any group is more than 1/4 or less than 1/3 of the total number of grids.


Description



Description

Known Error

CR 4529 Avoidance: Other than selecting another sequencer option, there is no avoidance.

Known Error Product

CR 4536 MSC / MD Nastran DMAP - EQUIV, EQUIVX - UFM 1126 in CALL SELR for datablock FPS (outputtwice) If the EQUIV or EQUIVX statement appears immediately after a CALL statement then the message "USER FATAL MESSAGE 1126" may be incorrectly issued in the subsequent loop. This is an error in the Last-Time-Used (LTU) logic. (Version 67, 67.5 and 67.7 only)

Corrected Version 68 Abstract

Description

Avoidance: An avoidance is to specify the PARAML module for the offending datablock after the EQUIV (or EQUIVX statement). For example, if UFM 1126 is issued for datablock PS then insert the PARAML DMAP statement as in the following example. CALL XXXX PG/PA,PS $ EQUIVX PA/PA1/-1 $ PARAML PS//'PRES' $


CR 4538 MSC / MD Nastran Nonlinear Analysis - ASETi, OMITi - Poor Message, SFM 2199, UWM 4698 If ASETi or OMITi entries are specified in SOL 66 or 106 and there are no elements with linear material properties, then SFM 2199 and UWM 4698 are issued. This error has been corrected in MSC/NASTRAN Version 68 by issuing the meaninful user fatal message 4423.

Corrected Version 68.0.0

Description

Avoidance: This is a user error. The avoidance is to remove all ASETi and OMITi entries since nonlinear degrees of freedom can not be omitted. The correction to SOL 66 and SOL 106 DMAPs results in the meaningful message "USER FATAL MESSAGE 4423 A NONLINEAR ELEMENT IS ATTACHED TO AN OMITTED DEGREE OF FREEDOM" being output. CR 4539 MSC / MD Nastran

Known Error Product



CR 4539 Plotting - NEUPS - Missing Plot Output, Stack Error If a plot file generated by the NEUPS utility can be displayed using the SUN PageView utility or other utilities, but is not able to be printed, then the Postscript file contains too many data points in a single curve and the data overflows the printer's memory. Avoidance: Possible resolutions include: 1. Increase the printer's memory (may not be feasible); or try on other printers, 2. Break a single long curve into a number of curves, 3. Modify the NEUPS utility with the following changes.

Description

In subroutine PLOT, change the following lines: After subroutine plot(x,y,i) Add save strkln After write (unit=ips,fmt=20) x, y,' lineto' Add strkln = strkln + 1 if( strkln.gt.50) then write(unit=ips, fmt=10) 'stroke' write(unit=ips, fmt=10) 'newpath'


CR 4543 MSC / MD Nastran Elements - QUADR - Wrong Answers for Non-Uniform Thickness The corner stress output for the QUADR and TRIAR elements due to membrane forces are calculated and output for the average thickness. Thus the corner stress output for non-uniform thickness elements is wrong. Avoidance: In MSC/NASTRAN Version 67.5, the STRESS(CORNER) option for the QUAD4 element may be used.


Description


CR 4545 MSC / MD Nastran File Management Section - INIT SCRATCH, SCR300- UFM 4275 Logical names and their reference to physical files must be unique across all INIT statements. Thus, if both SCRATCH and SCR300 are assigned to the


Known Error

CR 4545 same physical file, then the job may fail and the message "USER FATAL MESSAGE 4275" may be issued. Avoidance: ASSIGN SCRATCH and SCR300 to different files.


CR 4549 MSC / MD Nastran Documentation - CTRIAX6, GPWG - Missing Documentation For the axisymmetric TRIAX6 element, the Grid Point Weight Generator outputs the c.g. for the modeled structure only . The calculated mass is the mass for the entire structure of revolution. This is design intent. This error has been addressed by including a comment under the description of the PARAM,GRDPNT entry in the 2nd printing of the MSC/NASTRAN Version 68 Quick Reference Guide. CR 4551 MSC / MD Nastran Documentation - Application Manual, Section 7.7 - Installation Errors The following documentation errors exist in the Version 67.5 Section 7.7 of the CRAY(UNICOS), CONVEX, and VAX(VMS) MSC/NASTRAN Application Manuals: 1) CRAY(UNICOS) p. 7.7-5 n67ins should be n675ins. p. 7.7-7 %1f should be %1d. 2) CONVEX p. 7.7-5 n67ins should be n675ins. p. 7.7-9 The documentation should say move the nastran.p file and the nastran.man file into the /usr/man/catp directory. p. 7.7-20 nast67 should be nast675. 3) DEC VAX/VMS p. 7.7-14 The documentation on p. 7.7-14 should show "PRT=NO !" instead of "PRT=NO $". p. 7.7-36 5 should be 4 on the Step 5 line. p. 7.7-37 In the Step 7 section, "Steps 2 through 7" should read "Steps 2 through 6" and "Step 4" should be "Step 3"


Description



Description


CR 4555 MSC / MD Nastran 68 Documentation - DTIIN - Incorrect User's Manual Documentation The MSC/NASTRAN User's Manual documentation for the DTIIN entry is incorrect. The documentation currently indicates: DTIIN DTI,DTINDX/DTI1,DTI2,DTI3,DTI4,DTI5,DTI6,DTI7,DTI8,DTI9,DTI10/ PARM1/PARM2/PARM3,PARM4,PARM5,PARM6,PARM7,PARM8,PARM9/PARM10 $ This should be changed to:

Description DTIIN DTI,DTINDX/DTI1,DTI2,DTI3,DTI4,DTI5,DTI6,DTI7,DTI8,DTI9,DTI10/ PARM1/PARM2/PARM3/PARM4/PARM5/PARM6/PARM7/PARM8/PARM9/PARM10 $ This error has been corrected in the Version 68 DMAP Module Dictionary.


CR 4559 MSC / MD Nastran Miscellaneous - GPSTR1, MODAC2 - Missing Documentation, UWM 4605 The following two user messages have the same number: "USER WARNING MESSAGE 4605. MAXIMUM NUMBER OF MESSAGES HAVE BEEN ISSUED BY GPSTR1 MODULE."


Description

"USER FATAL MESSAGE 4605, INPUT MATRIX **** IS INCOMPATIBLE WITH ITS ASSOCIATED OUTPUT LIST (I.E., TOL, FOL, LAMA, CLAMA)." The latter message is correct since it is the one that is documented in the MSC/NASTRAN User's Manual.


CR 4561 MSC / MD Nastran Documentation - OFP - Missing Output Remark 2 of the MSC/NASTRAN User's Manual description of the OFP DMAP


Known Error

CR 4561 statement states that data blocks can be output by OFP. However, parameter OP1 does not honor data blocks LAMA, OEIGS, LAMX, CLAMA, and OGPWG. This error has been corrected in the Version 68 DMAP Module Dictionary.

Avoidance: There is no known avoidance. Known Error Product Abstract CR 4563 MSC / MD Nastran Restarts - SUBCOM, CBEAM - Inefficient Restarts When the SUBCOM Case Control command is added to a Structured Solution Sequence (SOL 101 through 200) data recovery restart, and the model contains CBEAM elements, the SEKRRS subDMAP is unnecessarily re-executed in the restart. (V67+ only). Description Avoidance: The error may be avoided by using one of the following actions: 1) Use PARAM,SERST,SEDR in the restart run, 2) Replace the SUBCOM with a SUBCASE that references an equivalent load. 3) Use an Unstructured Solution Sequence and perform a manual restart.



CR 4572 MSC / MD Nastran Miscellaneous - ACCT - Incorrect label in Accounting file The header of the last field of the MSC accounting file (created by the "acct" keyword) should indicate "Min" not "Sec". Avoidance: The MSC/NASTRAN Version 67.5 script should be changed as follows


Description

Original definition (line 521 on Sun): echo ' ACC3="Monthly-Total-CPU-Sec"'

Change to:

Known Error

CR 4572 echo ' ACC3="Monthly-Total-CPU-Min"'

Known Error Product Abstract Description Known Error Product Abstract

CR 4573 MSC / MD Nastran Aeroelastic Analysis - RESTART - Inefficient Restart If an M, K aero pair is added to a restart run in Solution 145 or 146, then the existing aerodynamic matrices are unnecessarily recomputed. CR 4574 MSC / MD Nastran Nonlinear Analysis - DBC, ESE - Missing Output On the CONVEX Version 67.5 release of MSC/NASTRAN if a nonlinear analysis contains a request for element strain energy output, then no data recovery output is written to the .XDB file. Avoidance: Remove the ESE request.



Description


CR 4575 MSC / MD Nastran Documentation - CQUAD4, PSHELL - Poor Answers A remark should be added to the MSC/NASTRAN User's Manual description of the PSHELL entry. If transverse shear flexibility is specified for a model with curved shells where the loading is dominated by twist, the results for a coarse to medium mesh model may be inaccurate and the results will diverge as the mesh is refined.


Description

Avoidance: MSC/NASTRAN Version 68.2 and later releases include "Shell Normals" an enhancement which corrects this deficiency. This enhancement is documented in the Version 69 Release Guide. Note that by default shell normals are not activated they must be explicitly requested. The Quick Reference Guide description of the CQUAD4 and PSHELL entries should be updated to provide guidance for the above situation. Permanent documentation, not release

Known Error

CR 4575 guides, should


CR 4576 MSC / MD Nastran Material Nonlinear Analysis - NLPCI, RIKS, MRIKS - UWM 6195 When either the RIKS or MRIKS method is used in MSC/NASTRAN Version 67 and later systems, the message "USER WARNING MESSAGE 6195 SOLUTION HAS REGRESSED TO AN EARLIER LOAD STEP" may be issued and the solution will not adapt. Avoidance: Specify the CRIS method on the NLPCI entry.


Description


CR 4582 MSC / MD Nastran Elements - CMASSi, SEQP- Poor Message, UFM 2012 If a CMASSi entry (and possibly other scalar elements) specify the "0" degree of freedom of a grid point, the job fails and the message "USER FATAL MESSAGE 2012 GRID POINT *** SAME AS SCALAR POINT" is issued. Avoidance: Specify a valid degree of freedom on the CMASSi entry. CR 4584 MSC / MD Nastran Postprocessing - OUTPUT2, PARAM,POST - Segmentation Violation Depending on the machine and operating system level, an error may be encountered when writing very large unformatted OUTPUT2 and OUTPUT4 files. This error causes the message "Segmentation Violation = Signal 11 Code 3" to appear in the log file, with the result that the OUTPUTi files are incorrect. This error has been corrected in Version 67.5.01. Version 67.5.01 is delivered to all new Sun clients and is available on request to all existing clients. This error has been observed on the following hardware/software combinations: MSC/NASTRAN SunOS Version Version Machine Status V67.5 4.1.3 Ver. 3 SparcStation 2 Fails


Description


Corrected Version 67.5.0.1

Description

Known Error

CR 4584 Sparcstation 10 Fails Sparc server


CR 4586 MSC / MD Nastran File Management Section - ASSIGN, INIT, - UFM 505 If an FMS statement begins with any blank space, then the job fails and the message "USER FATAL MESSAGE 505 (XCSA) CONTROL CARD 'FMS STATEMENT' IS ILLEGAL" is output. Avoidance: Enter the FMS statement beginning in field 1.


Description


CR 4606 MSC / MD Nastran Postprocessing - OUTPUT2 - SFM 1222 If an OUTPUT2 neutral file is created and the ITAPE=-9 option is not used to write an EOF, then the following messages appear in the RCOUT2 job print when converting the file back to binary form: *** SYSTEM FATAL MESSAGE 1222 (LDRTRN) AN UNEXPECTED END OF FILE WAS DETECTED ON A NEUTRAL FILE DURING A DBLOAD OPERATION USER INFORMATION: THIS ERROR TERMINATES PROGRAM EXECUTION AND GENERALLY OCCURS WHEN THE DBUNLOAD JOB FAILS DURING NEUTRAL FILE CREATION USER ACTION: REVIEW NEUTRAL FILE CREATION JOB FOR FATAL MESSAGES

Description *** SYSTEM INFORMATION MESSAGE RC0008 (RCOUT2) THE END-OF-FILE FATAL MESSAGE WRITTEN ABOVE OCCURRED DURING DATA BLOCK NAME PROCESSING. PROGRAMMER INFORMATION: 1. THIS ERROR GENERALLY INDICATES THAT THE LAST OUTPUT2 OPTION USED WAS NOT -9 2. THE OUTPUT2 FORTRAN BINARY FILE CREATED IS CORRECT AND REFLECTS THE CONTENT OF THE NEUTRAL FILE.

Known Error

CR 4606 Avoidance: When creating neutral-format OUTPUT2 files, the -9 option should be used as follows: OUTPUT2 ,,,,//-9/unit number


CR 4609 MSC / MD Nastran Superelements - TEMP(LOAD), TEMP(INIT), RESTARTS - Wrong Answers The following error with thermal loads may occur in restarts with the superelement unstructured Solution Sequences (61-99) or restarts with PARAM,SERST,SEMI (or SEDR) in Solutions 101-200. If the initial temperature is not specified (i.e., TEMP(INIT) is not present) in the initial run (cold start) loads are not generated (i.e., SELG and SELR are not requested), and in the restart run TEMP(LOAD), TEMP(BOTH) or TEMP is specified but no SEMG requests are made (for the superelements processed in the cold start), then the thermal loads are incorrect. This error occurs because the EST data block, which is used in generating thermal loads and depends on the TEMP(INIT), is not regenerated in the restart. It is only generated if SEMG is requested. Avoidance: Specify the same TEMP(INIT) in th


Description


CR 4610 MSC / MD Nastran Static Analysis - PARAM,MPCF, PARAM,INREL - UFM 3055 If inertia relief is requested in SOL 101 (PARAM,INREL,-1) in conjunction with "PARAM,MPCF,YES" in MSC/NASTRAN Version 67.5, then the job fails and the message "USER FATAL MESSAGE 3055 AN ATTEMPT TO MULTIPLY OR MULTIPLY AND ADD NON-CONFORMABLE MATRICES TOGETHER WAS MADE IN MODULE MPYAD". This is a version 67.5+ error only. Avoidance: If the model does not contain superelements (i.e., residual only), the following DMAP Alter may be applied to avoid this error: COMPILE SEDRCVR SOUIN=MSCSOU LIST NOREF ALTER 16,16 $ CHANGE PG TO PJ1


Description

Known Error

CR 4610 UPARTN USET,PJ1/PM,,,/'G'/'M'/'N'/1 $ A DMAP avoidance is under investigation for models that contain superelements.

Known Error Product

CR 4611 MSC / MD Nastran DMAP - OUTPUT2, INPUTT2 - Neutral Format, UWM 6444, SFM 1208, SFM 1214 Using the NEUTRAL FORMAT option of OUTPUT2 and INPUTT2 in DMAP may cause the run to fail and issue the following warning and fatal messages: "UWM 6444 (INPTYP) - THE FILE ASSIGNED TO UNIT = CONTAINS DATA THAT IS INCONSISTENT WITH FORM = FORMATTED", "SFM 1208 (LDSTR) - ERROR SETTING UP TRANSLATE TABLE AT LOC = " and "SFM 1214 (LDRTRN) - ERROR TRANSLATING DATA FROM NEUTRAL FILE READ FOR SUBROUTINE LDSTR". Avoidance: Encountering this error is very unlikely and there is no a priori avoidance. If the error is encountered, some possible ways to workaround this problem are as follows: 1. Use the RCOUT2 utility to convert the neutral file to a binary file. Then use the binary option of INPUTT2 to read the file. 2. Rerun the initial OUTPUT2 job with a different neutral record le


Description

Known Error Product

CR 4612 MSC / MD Nastran Postprocessing - OUTPUT2, INPUTT2 - UWM 6444, SFM 1208, SFM 1214, SFM 2190 The INPUTT2 module may fail when attempting to read an input file formatted with the new neutral option in MSC/NASTRAN Version 67.5. Messages that are evidence of this error include "USER WARNING MESSAGE 6444", "SYSTEM FATAL MESSAGE 1208", "SYSTEM FATAL MESSAGE 1214", and "SYSTEM FATAL MESSAGE 2190 (INPTN2) ILLEGAL VALUE FOR KEY". Avoidance: Use the RCOUT2 utility to convert the neutral file to a binary


Description

Known Error

CR 4612 file. Then use the binary option of the INPUTT2 module to read the file.


CR 4617 MSC / MD Nastran Miscellaneous - - Missing Completion Time and Date The date and time that MSC/NASTRAN finishes is not printed to the .log file on the DECstation ULTRIX Version 67R2 system.


Description

Avoidance: Line 331 in the ".shl" should be modified. Remove the "exec " command and replace as follows: echo "/bin/time ${LOC_EXE}/${EXE_NAME} ${asgf} {$mem}"

Known Error Product

CR 4618 MSC / MD Nastran Acoustic Analysis - ACSRCE, CHACAB, PACABS - Wrong Answers, Missing Output If an ACSRCE Bulk Data entry has the same DAREA ID (field 3) for loads applied to structural grid points then wrong answers or missing output may result.


Description

Avoidance: Define a RLOADi or TLOADi Bulk Data entry with an SID (field 2) and DAREA ID (field 3) which is unique with respect to the ACSRCE entry. Then define a DLOAD Bulk Data entry which is referenced by the DLOAD Case Control command and combines the RLOADi (or TLOADi) and ACSRCE entries. CR 4619 MSC / MD Nastran Matrix Methods - SPARSE DECOMP, FBS - Wrong Answers If the sparse solver and FBS are run more than once and 2 by 2 pivots are necessary for some of the FBS operations, there may be wrong answers. Positive definite matrices do not require pivoting operations. Thus, this error is unlikely in the delivered solution sequences. The DMAP alter RFLAG.V675 delivered with Version 67.5 does not encounter this problem if superelements are not present.



Description

Known Error

CR 4619 Avoidance: Do not use sparse decomposition with alters such as the Lagrange multiplier method that may produce indefinite matrices.

Known Error Product

CR 4620 MSC / MD Nastran Aeroelastic Analysis - AMG, UFBS, ZONA - Divide By Zero, Missing Data Blocks The supersonic aerodynamic code (ZONA) contained in the Aero II option can fail when the inverse Mach line emanating from a control point of one bax is almost perfectly aligned with the leading edge of another box. On some machines, the error is evidenced by a divide by zero check in the AMG module. On others, it produces missing datablocks in the UFBS module. Avoidance: Experience has shown that a slight change in the requested Mach number (e.g., from M=2.4 to M=2.41) causes the error to go away and good answers result.

Corrected Version 67.7.0.1 Abstract

Description


CR 4621 MSC / MD Nastran Plotting - AERO1 - No Plottable Structural Elements Exist If the user desires a plot of only the aerodynamic model and specifies SET 1=AERO1, the following message appears:


Description

NO PLOTTABLE STRUCTURAL ELEMENTS EXIST IN SET 1 Avoidance: Adding any other element to the SET, such as SET 1=AERO1,QUAD4, results in a plot of the aerodynamic model and the elements specified.


CR 4623 MSC / MD Nastran Dynamic Response Analysis - TRD1 - UWM 3045, Poor Message If a job fails in the TRD1 module due to insufficient time the message "USER WARNING MESSAGE 3045 INSUFFICIENT TIME TO COMPLETE THE REMAINING ** SOLUTION(S) IN MODULE TRD1" is output. This message gives no indication of the amount

Corrected Version 70.5.2

Known Error

CR 4623 of time necessary to complete the module. This message is also output by modules AMP, CEAD, FA2, FRRD1, and TRD2. Avoidance: Increase the amount of time on the TIME command.


CR 4626 MSC / MD Nastran Documentation - LOAD - Limitation Removed Remark 6 under the MSC/NASTRAN User's Manual and Quick Reference Guide description of the LOAD entry is no longer applicable. In MSC/NASTRAN Version 66 the limit of 300 Si, Li pairs was removed. CR 4627 MSC / MD Nastran Eigenvalue Analysis - EIGRL, LANCZOS - UFM 5429 The time estimated to complete a LANCZOS iteration may be very conservative for large problems. Thus, a run where ample time is specified may inappropriately encounter the message "USER FATAL MESSAGE 5429, INSUFFICIENT TIME TO START LANCZOS ITERATION". Avoidance: Specify a very large value on the TIME entry. CR 4629 MSC / MD Nastran Documentation - Application Manual, Section 7.7.2 - Installation The command "dd if=/dev/extape of=/tmp/MSC675 bs=8b" (documented on page 7.7-2 of the MSC/NASTRAN Application Manual, Version 67.5 for CRAY UNICOS computers) which is to load the file from the delivery tape when an expander tape drive is used, does not work. ` Avoidance: Use the command "dd if=/dev/extape of=/tmp/MSC675 bs=32768" as documented on the same page.




Description



Description


CR 4631 MSC / MD Nastran Miscellaneous - Shell Script - Data File Not Found If the name of the .dat file happens to match the beginning of the directory name, and that directory is included in the 1st argument (jid), line 184 of the Convex script file will remove the file name portion from the directory path, and thus the data file will not be found: For example if you have a data file named "abc.dat" in directory /usr1/jones/abc_dir, then submitting a V675 job as: nast675 /usr1/jones/abc_dir/abc will yield: Data file /usr1/jones_dir/abc.dat not found.


Description

Avoidance: Change the the following (line 184) in the script: (add a "\$" sign after the "name") from jid_dir=ècho ${jid} | sed "s;\/$name;;"` to jid_dir=ècho ${jid} | sed "s;\/$name\$;;"` also change the name into nametmp old line: jid_dir=ècho ${jid} | se


CR 4634 MSC / MD Nastran Cyclic Symmetry - EIGRL, CYSUP - Wrong Answers In cyclic symmetry analysis, the Lanczos method of eigenvalue extraction may incorrectly apply "SUPORT" logic which is selected by the CYSUP Bulk Data entry. In one problem, the CYSUP entry resulted in the first eigenvalue of the second Harmonic (a flexible mode) being set to 0 incorrectly. The eigenvector for this mode is correct. Avoidance: Do not use the CYSUP entry with the Lanczos method of eigenvalue extraction.


Description


CR 4637 MSC / MD Nastran DMAP - VECPLOT - Incorrect Matrix Trailer, Wrong Answers When the VECPLOT module is used to generate a matrix containing the geometry of the model, the resulting matrix may have an incorrect trailer value for the number of rows. If this is the case, subsequent modules that use the matrix may fail or give incorrect results.


Description

Avoidance: The following DMAP Alter demonstrates the use of the VECPLOT module to generate a matrix called OUTGEOM with the model geometry and uses the MODTRL module to correct the trailer. VECPLOT ,,BGPDT,EQEXIN,CSTM,,/OUTGEOM/0/3 $ MODTRL OUTGEOM///LUSET $


CR 4644 MSC / MD Nastran Acoustic Analysis - PARAM,FLUIDMP - Missing Output The panel participation factors output are missing when the modal participation factors are requested for panels in acoustics, the request is for a selected set of grids, and the model consists of only fluid elements. This error exists in Version 67.5 and 68. Version 67 users should refer to Error 3672 before proceeding. Avoidance: To avoid this error in Version 67.5, apply the DMAP Alter listed below. COMPILE SEMFREQ SOUIN=MSCSOU NOREF ALTER 125,125 EQUIVX OG/OA/NOA $ IF (NOA>-1) UPARTN USET,OG/OA,,,/'G'/'A'/'S'/1 $ ALTER 148 IF ( FLUIDMP MATGEN ,/FTMP/6/NFEIG/0/FLUIDMP $ PARTN UHFF,,FTMP/,UHFF1,,/1 $ EQUIVX UHFF1/UHFF/-1 $ PARTN PHFA1,FTMP,/,,PHFA2,/1 $ ELSE $ EQUIVX PHFA1/PHFA2/-1 $ ENDIF $ ALTER 155,162


Description

Known Error

CR 4644 To a


CR 4654 MSC / MD Nastran Documentation - PARAM,CURVPLOT - Missing SORT1 Output The documentation for PARAM,CURVPLOT does not indicate that it is a valid parameter for Solutions 71, 72, 111, and 112. This parameter must be specified to obtain SORT1 output in the aforementioned solution sequences. This documentation error is corrected in the 2nd printing of the Version 68 Quick Reference Guide. CR 4655 MSC / MD Nastran DMAP - COMPILE, XREF - Missing Output The MSC/NASTRAN User's Manual for the COMPILE statement states that a cross-reference is available for an NDDL COMPILE. The Version 67 documentation should be amended as follows to indicate the specific circumstances when the NDDL X-REF is available. This capability has been added to Version 68, please see error 2869. [Add to Remark 6.]


Description



Description d. The cross-reference is produced only when the NDDL source is provided directly in the input file. It is not produced when the source is obtained from a SOUIN command. For example, the following two-run sequence produces a cross-reference of NDDLOLD. Note that the cross reference can be large. The cross-reference produced for the NDDL of the Structured Solution Sequences is more than 1000 pages in length. The cross reference for NDDLOLD p Known Error Product Abstract Description CR 4656 MSC / MD Nastran DMAP - RESTART, DELETE - Wrong Answers The DELETE module is skipped in an automatic restart if the datablock(s) to be deleted exist on the database. Note that MSC/NASTRAN's solution


Known Error

CR 4656 sequences use the RESTART module to delete data blocks from the database on a restart run. Thus, this error only affects user DMAPs. Avoidance: Set system cell 109 to 1 before the DELETE and back to 0 immediately after the DELETE. For example, to delete data blocks A and B: PUTSYS(1,109) $ DELETE /A,B,,, $ PUTSYS(0,109) $


CR 4663 MSC / MD Nastran Old Design Sensitivity - DSCMR - Wrong Answers For large problems (many elements) with many design variables, the DSCMR sensitivity coefficient matrix may have zero values for design variables that should have non zero values of sensitivity coefficients. This problem has been addressed by the solution 200 material sensitivity project in Version 70.7.


Description Avoidance: If the user suspects that there are zero values in the sensitivity coefficient matrix that should be non zero, then reduce the number of design variables requested and compute a new DSCMR matrix.


CR 4670 MSC / MD Nastran DMAP - DIAGONAL - Missing Documentation There is no mention in the Version 67 "Nonupward Compatible Features" that the DIAGONAL DMAP module changed and that these changes may result in a nonupward compatibility for user DMAPs. Starting with Version 67, the OPT parameter was changed from BCD to a CHARACTER input. Thus, the values must be enclosed in quotes. If a value is not enclosed in quotes, MSC/NASTRAN interprets the input as a variable and sets the variable to the default value of 'COLUMN'. Since the "Nonupward Compatible Features" for Version


Description

Known Error

CR 4670 67 documentation will not be re-issued, this error is considered addressed with this error report.


CR 4677 MSC / MD Nastran Lagrange Multiplier - CVISCi, CDAMPi - Wrong Answers The Lagrange Multiplier DMAP alter delivered in the file RFLAG.V675 in Version 67.5 results in wrong answers for modal frequency response analysis when the models contains viscous dampers. Avoidance: Change RFLAG.V675 as follows:


Description

COMPILE GKAMJR $ $ . . . . skip down about 20 lines, replace following statement $ IF (YES2SET=-1) THEN $ insert next statement in its place IF (false) THEN $

Further client information indicates that this alter still does not work. Known Error Product Corrected Version Abstract Nonlinear Analysis - NLEMG - Load Increment is Skipped In solution 106 if param,lgdisp is set to 1 and no nonlinear elements exist, then after a stiffness update the load increment will skip to the next increment. Avoidance: Either add a nonlinear element or place yes in 9th field of the NLPARM entry. Known Error Product Abstract CR 4687 MSC / MD Nastran Grid Point Stress - GPSTR1, QUAD4, TRIA3, QUAD8, TRIA6 - Wrong Answers If grid point stress output is requested and the edge point is attached to a linear plate element (QUAD4 or TRIA3), the grid point stress calculation at this edge point may be incorrect. The error only occurs when the other end of the interior line segment connecting to the edge grid is attached to a higher order shell element (QUAD8 or TRIA6). In this case, the stress contribution of the interior grid point is not included in the grid point CR 4684 MSC / MD Nastran

Description


Description

Known Error

CR 4687 stress calculation at the edge point. Avoidance: If the edge grid point is connected to a QUAD4 element, then requesting corner output resolves this problem. Unfortunately, corner output is only available starting with Version 67.5. If the edge point is connected to a TRIA3 element or Version 67.5 is not available, then there is no avoidance.


CR 4692 MSC / MD Nastran Installation - Incorrect File Permissions - No Access Allowed The delivery tape for MSC/NASTRAN Version 67.5 for the CRAY Y-MP (UNICOS) was incorrectly written. In particular, all file permissions for 'other' access are blank, i.e., no access is allowed. The error is corrected for all new installations by the tape labeled "V67.5 MSC/NASTRAN (r2)". Avoidance: The error may be corrected by executing the following commands: cd /msc # or the actual "repository" directory. cd bin find . -perm 770 -exec chmod 777 {} \; find . -perm 660 -exec chmod 666 {} \; find . -perm 750 -exec chmod 755 {} \; find . -perm 640 -exec chmod 644 {} \; If the repository and installation directories are not the same, execute the following additional commands: cd /msc/nast675 # or the actual "installation" directory find . -perm 770 -exec ch


Description

Known Error Product

CR 4695 MSC / MD Nastran Grid Point Stress - ELSDCON - Missing GPSTRESS Discontinuity Output, SWM 6247 When requesting grid point stress discontinuities, and more than one type of element is in the surface or volume, the following message is received: "SYSTEM WARNING MESSAGE 6247 (STD2HD/S), THERE IS AN INCONSISTENT


Description

Known Error

CR 4695 POINTER TABLE FOR SCR4 FILE...CHECK POINTER TABLE 5 FOR SCR4 FILE" The run then terminates. Avoidance: Only use one element type in a surface or volume.


CR 4696 MSC / MD Nastran Aeroelastic Analysis - SPLINE - UFM 2262 If a SPLINE Bulk Data entry specifies BOX1 and BOX2 or ID1 and ID2 such that there are no aerodynamic boxes splined, the code does not detect the user error. The job will subsequently fail and issue the misleading messages "USER FATAL MESSAGE 2262 (GIPTSD) SPLINE **** INCLUDES AERO BOX INCLUDED ON AN EARLIER SPLINE". Avoidance: Correct the offending SPLINE entry.


Description


CR 4700 MSC / MD Nastran Elements - QUAD4(CORNER) - UWM 6418, Missing Output If a Case Control data recovery request is made for QUAD4 corner and center output within the same run, then the message "USER WARNING MESSAGE 6418" is output to warn the user that only one output type is supported per run. The hierarchy of the request that takes precedence is documented in the MSC/NASTRAN Release Notes for Version 67.5. The user warning message contains null characters which may cause some editors to fail and all subsequent output to be missing. Avoidance: Correct the Case Control output requests so that they all request either corner or center output.


Description


CR 4701 MSC / MD Nastran Frequency Response Analysis - FRRD1 - SFM 4276, EC 3012 Under unusual circumstances a frequency response run (Solution 26) fails


Known Error

CR 4701 in the FRRD1 module and the message "SYSTEM FATAL MESSAGE 4276 QOPEN ERROR CODE 3012" is issued. This error occurs when there are multiple calls to FRRD1 where the first call solves for a single subcase (load case) or a single frequency and a subsequent call solves for multiple frequencies and multiple subcases (load cases). Avoidance: In Solution 26 the error may be avoided by reordering subcases. The subcases that solve for multiple frequencies and multiple subcases (load cases) must be placed first in the Case Control Section.

Known Error Product

CR 4703 MSC / MD Nastran Nonlinear Transient Analysis - TSTEPNL, TLOAD1 - UFM 4605, Wrong Answers If the "AUTO" method is selected on the TSTEPNL entry for nonlinear transient analysis and the excitation function on the TLOAD1 entry specifies an enforced displacement, then the results are unpredictable. In some cases, the job may fail with the following error message:

Corrected Version GL Abstract

Description

USER FATAL MESSAGE 4605. INPUT MATRIX PST IS INCOMPATIBLE WITH ITS ASSOCIATED OUTPUT LIST (I.E., TOL,FOL,LAMA,CLAMA). In other cases, the run may generate wrong answers. Furthermore, the results may not be repeatable from run to run even on the same machine. Avoidance: Use the "ADAPT" method, which is the default method.


CR 4707 MSC / MD Nastran Restarts - MATi, PCOMP, PELAS - Wrong Answers If a change is made to the upstream superelement structural damping terms (GE field on MATi, PCOMP and PELASi entries), then the structural damping matrix, K4GG is not reassembled to include the upstream structural damping changes. This results in wrong answers in dynamic response solution sequences.


Description

Avoidance: Use Version 67.5 or higher for both the COLD start and RESTART.

Known Error

CR 4707 If you must use Version 67 (or Version 67R2), then insert the following alter which will force K4GG to be reassembled on restart. COMPILE SEMRB SOUIN=MSCSOU NOLIST NOREF ALTER 5 PUTSYS (1,109) ALTER 10 PUTSYS (0,109) ENDALTER


CR 4712 MSC / MD Nastran Cyclic Symmetry - RESTART - Wrong Answers Restarts to compute modes for additional harmonics does not work correctly. In the RESTART, MSC/NASTRAN calculates the eigenvalues correctly but prints out the eigenvectors for the harmonics from the initial run. Avoidance: To obtain the eigenvectors for the additional harmonics, apply the following alter:


Description

COMPILE MODECYC SOUIN=MSCSOU LIST NOREF ALTER 28 PUTSYS(1,109) $ ...FORCE EXECUTION ALTER 30 PUTSYS(0,109) $ ...RESET ENDALTER COMPILE SEDISP SOUIN=MSCSOU LIST NOREF ALTER 130 PUTSYS(1,109) $ ...FORCE EXECUTION ENDALTER


CR 4717 MSC / MD Nastran Superelements - RESTART, SEEXCLUDE - Wrong Answers The automatic restart logic in the SSS does not recognize the SEEX case control command. If the only change to a model is to attempt to exclude a superelement (or set of superelements) on a restart, then the program does not perform the necessary operations and the answers from the original


Description

Known Error

CR 4717 run are used. Avoidance: Make a change to the superelement immediately downstream from the superelements affected by the SEEX command. For example, add a disjoint GRID point to the downstream superelement. The automatic restart logic then reprocesses the downstream superelement and correctly processes the SEEX command.


CR 4718 MSC / MD Nastran File Management Section - DBUNLOAD - Infinite CPU Loop Attempting to DBUNLOAD a data block in the neutral format that is not defined in the NDDL may result in the program entering an infinite CPU loop.


Description Avoidance: Do not use the DBUNLOAD neutral option when outputting nonNDDL data blocks. Known Error Product Abstract CR 4721 MSC / MD Nastran Miscellaneous - Shell Script Error - Unidentified Keyword on IBM RS/6000 An error exists in the IBM RS/6000 operating system that causes the NASTRAN shell script to incorrectly translate keywords resulting in an "unidentified keyword" error message being output during submittal of the NASTRAN job. The problem lies with the translate function. If a keyword is specified in uppercase in the nast675rc file, then it will be transposed by one character. The following example of the "tr" command illustrates the error: echo "FrEd" | tr '[a-z]' '[A-Z]' gRfD Thus, the valid keyword SDIR is translated to "tejs" and an unidentified keyword entry error results. Avoidance: This error may be overcome by using the "tr -A" option.


Description


CR 4723 MSC / MD Nastran Documentation - OUTPUT2, RCOUT2 - Poor Message, SFM RC0005 The OUTPUT2 neutral option is driven by the NDDL description for the datablock to be neutralized. An incorrect NDDL description results in the following FATAL message during the RCOUT2 run. 0*** SYSTEM FATAL MESSAGE RC0005 (RCOUT2) ILLEGAL KEY VALUE DETECTED USER INFORMATION: EXPECTED KEY VALUE: GREATER THAN OR EQUAL TO 2 DETECTED KEY VALUE: -3 FATAL ERROR CODE - INVALKEY 0004 FATAL ERROR Although the consequences of attempting to output a non-NDDL data block using the neutral option is not documented, the MSC/NASTRAN Release Notes for Version 67.5 clearly documents that only NDDL data blocks may be output with the neutral option. Avoidance: The new documentation for OUTPUT2 in Appendix C of the MSC/NASTRAN Release N


Description

Known

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