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Patran 2014 Reference Manual Part 5: Analysis Application
Patran 2014
Reference ManualPart 5: Analysis Application
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METIS is copyrighted by the regents of the University of Minnesota. A copy of the METIS product documentation is included with this installation. Please see "A Fast and High Quality Multilevel Scheme for Partitioning Irregular Graphs". George Karypis and Vipin Kumar. SIAM Journal on Scientific Computing, Vol. 20, No. 1, pp. 359-392, 1999.
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C o n t e n t sPatran Reference Manual
1 Introduction to Analysis
Application Modules 2
Application Interfaces 3
User-Added Code 4
Relation to Preferences and Functional Assignments 5
Key Features 6
2 Analysis Forms
The Analysis Form 8
Analyze - Setting Up a File for Analysis 9
Read Results 13Select File 15Result File Types 17
INDEX
Patran Reference Manual
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Ch. 1: Introduction to Analysis MSC.Patran Reference Manual
Analysis is the gateway to the various solvers that can be used to analyze a model and generate results. MSC Software Corporation provides several Application Modules and Application Preferences. Preferences to third-party or in-house analysis code is also supported by the Analysis application. Check with your system administrator to find out which modules and interfaces are licensed at your site.
1 Introduction to Analysis
Application Modules 2
Application Interfaces 3
User-Added Code 4
Relation to Preferences and Functional Assignments 5
Key Features 6
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Application ModulesApplication Modules are a suite of analysis simulation products developed and marketed by MSC Software Corporation. These products include the following:
Patran Analysis Manager provides analysis management such as basic submittal, monitoring, and aborting capabilities, as well as automated “housekeeping” tasks for analysis codes supported by Patran, and operates in a heterogeneous networking environment.
MSC Fatigue provides advanced fatigue life estimation capabilities for use with finite element analysis results.
Patran Thermal provides capabilities for the solution of advanced thermal problems involving conduction, convection, radiation, and advection.
Patran Materials can now access non-linear material properties.
MSC Laminate Modeler is a Patran module for aiding the design, analysis and manufacture of laminated composite structures.
Contact your sales representative for information about the availability and capabilities of these products.
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Application InterfacesPatran is an open system which allows analysis solvers not provided by MSC to be developed and accessed. Application Preferences are MSC supplied interfaces to some of the more popular analysis codes. These interfaces convert the data in the Patran database into the required analysis code input decks. After the analysis code is run, the Application Preference also provides a method to convert the analysis code results file into a Patran results database. These interfaces include:
• Patran ABAQUS Preference Guide
• Patran ANSYS Preference Guide
• Patran LS-DYNA3D Preference Guide
• MSC Marc Preference Guide
• Dytran Preference Guide
• Patran MSC Nastran Preference Guide, Volumes 1-2
• Patran PAMCRASH Preference Guide
• Patran SAMCEF Preference Guide
• PATRAN 2 Neutral File Preference Guide
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User-Added CodePatran provides an open architecture to allow users or third-party developers to integrate analysis codes into the Patran system. Tools are provided to define the analysis code-specific material property, element property, MPC definition, and analysis parameter forms presented by the Patran system. Tools and libraries are also provided to access the Patran database to extend the data required to produce an input deck and to translate results from analysis code-specific results files. For more information, see Steps to Adding a New Functionality to Patran (p. 3) in the PCL and Customization.
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Relation to Preferences and Functional AssignmentsThe various MSC supplied Application Modules and Application Preferences, as well as user-added code, are listed in the Analysis Preferences menu. An analysis code and an analysis type are specified by the user. For example, the analysis code might be for MSC Nastran and the analysis type STRUCTURAL. The selection can be changed any time during model creation. However, there may be conflicts in the data if the analysis code preference is changed after properties are assigned.
If the intended analysis code is modified, as much data as possible will be converted. If the new intended analysis code has required properties that are not defined, or if data cannot be transferred, a warning message will be displayed.
Analysis Preferences
MSC Nastran
Analysis Code Selection:
Default Model File Suffix
Default Results File Suffix
OK
Structural
Analysis Type:
.bdf
.op2
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Key FeaturesThe Analysis application provides the means to:
• Identify a desired analysis type.
• Define analysis code specific translation and solution parameters.
• Select a sequence of load cases.
• Select desired output parameters.
• Send data to solvers.
• Read results quantities and model data from analysis code results files.
The Analysis application provides the link between the Patran preprocessing and postprocessing environments and the analysis solvers. The level of integration is identical for application modules, application interfaces, or user developed interfaces.
Ch. 2: Analysis Forms MSC.Patran Reference Manual
2 Analysis Forms
The Analysis Form 8
Analyze - Setting Up a File for Analysis 9
Read Results 13
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The Analysis FormWhen the Analysis option is selected from the Patran window, the Analysis form is displayed. The available selections in the Action menu typically are (depending on the selected analysis code) Analyze, Read Results, and Read Input. The remainder of the form depends upon the selected option in the Action menu.
The current analysis code and type Preferences are displayed on the form for informational purposes. To change the selection, pull down the Preferences menu from the menu bar in the Patran window, select Analysis, and make a new selection in the Analysis Preferences form that is displayed.
The following pages describe the various configurations of the Analysis form. The available options depend on the current analysis code selection. The forms that are subordinate to the Analysis form are dependent on the current analysis code selection as well.
A detailed description of each form is provided in the individual preference guide or user manual.
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Analyze - Setting Up a File for AnalysisFor applications, the Analyze option will cause the model to be submitted for analysis. For preferences, the Analyze option will cause the forward translator to run and the resulting input deck may be submitted for analysis. To abort the analysis prior to submitting, deselect the Analysis option from the Patran window or change the Action selection on the Analysis form.
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The following options appear on the Analysis form when Analyze is the selected Action.
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The buttons on the lower section of the Analysis form provide access to subordinate forms where additional input about the analysis may be input by the user. The functions of these buttons are highly
Object Defines what part of the model will be included in the translation and/or analysis. Choices may be Entire Model or Current Group.
Method Defines how far the analysis will go. The available settings may be Full Run, Check Run, Analysis Deck, and Model Only. If Full Run is selected, any required forward translation is done, then the analysis solver is invoked to run the problem. If Check Run is selected, the solver is asked to only do a check run. The type of feedback received from a check run depends on the current analysis code selected.
Available Jobs Lists all jobnames currently defined for the selected analysis code.
Job Name Defines the name to be attached to all files associated with this particular run. Every analysis jobname must be unique for a particular analysis code. The same jobname must be used for both the Analyze and the Read Results File selections if the results are to be loaded into the originating load cases. These analysis jobnames are stored in the database and are used to correlate the load cases selected in Analyze with the load cases it finds in Read Results File.
TITLESUBTITLELABEL
Specifies the title, subtitle and label to be used in the analysis run for the currently selected job. This information will be displayed on the Results Form.
More Help
Preference Guides Preference Guides
Please see, Overview (Ch. 1) in the Patran Interface to ABAQUS Preference Guide.
Please see, Overview (Ch. 1) in the Patran Interface to MSC Nastran Preference Guide
Please see, Introduction (Ch. 1) in the Patran Thermal User’s Guide Volume 1: Thermal/Hydraulic Analysis.
Please see, Overview (Ch. 1) in the Patran Interface to ANSYS Preference Guide.
Please see, Overview (Ch. 1) in the Patran Interface to SAMCEF Preference Guide
Please see, Overview (Ch. 1) in the Marc Preference Guide.
Please see, Overview (Ch. 1) in the Patran Interface to LS-DYNA Preference Guide.
Please see, Overview (Ch. 1) in the Patran Interface to Dytran Preference Guide
Please see, Overview (Ch. 1) in the PATRAN 2 Neutral File Preference Guide
Please see, Overview (Ch. 1) in the Patran Interface to PAMCRASH Preference Guide.
Please see, Quickstart (Ch. 1) in the MSC SINDA for Patran User’s Guide.
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dependent on the particular analysis code section. An example of the buttons on the Analysis form for a "generic" analysis code are shown below.
Translation Parameters...
Displays the Translation Parameters form to specify parameters not directly related to the solution. These are primarily used by the Application Preferences during the forward translation.
Solution Type... Displays the Solution Type form to select the desired type of analysis to run.
Direct Text Input... Specify the parameters used during the solution using the Solution Parameters form. These parameters are also usually dependent on the selected Solution Type.
Subcases... Displays a form to select a list of load cases to be included in this analysis run. The list of selected load cases is order dependent.
Subcase Select... Displays the Subcase Select form to control what output is generated by the analysis run.
Analysis Manager... If invoked, the Patran Analysis Manager allows for more advanced analysis management features not available from the Analysis form. For more details, see the Analysis Manager User’s Guide.
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Read ResultsThe following options appear on the Analysis form when Read Results is the selected Action. Read Results indicates that data is to be read in from an analysis code results file. This can be results and/or
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model data. To abort the results reading, deselect the Analysis button from the main menu bar or change the Action selection.
Analysis
Read ResultsAction:
Pref:
Result Entities Object:
Translate Method:
Available Jobs
Translation Parameters...
Select Results File...
MSC Nastran
Type: Structural
temp
Job name
Job Description
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Select FileThis form is displayed when the Select Results File button is clicked on the Analysis form and Read Results is the selected Action, or when the Select Input File button is clicked and the Action is set to Read
Object Defines what data is to be read from the analysis code results file. This can be set to Result Entities, Model Data, or Both. Before Model Data or Both is selected, the user must be sure there will not be a conflict with existing model data. There is no allowance for offsetting IDs when reading model data from a results file.
Method Defines how the Results Translator will execute. This can be set to Translate or Control File. If Translate is used, the user-supplied information is written to a Control File, which in turn is read by the Results Translator Program. If the Results Translator cannot be found on the network, the Control File asks that the process stop after the Control File is written. The user can then move the Control File to where the Results Translator resides, and use it to execute the results translation.
Job Name Defines the name to be attached to all files associated with this particular run. This jobname for the results translation should be the same as the jobname used in Analyze. This jobname allows the translator to determine load case results.
Translation Parameters...
Displays the Translation Parameters. These are primarily used for filtering results or specifying which results are to be imported.
Select Results File... Displays the Select File form to modify the current selection of the analysis code results file to be read.
More Help
Preference Guides Preference Guides
Patran ABAQUS Patran MSC Nastran Patran Thermal
Patran ANSYS Patran SAMCEF
Patran MSC.Marc
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Input. Use this form to select a file to be read. The default file filters will change depending on the code preference selected in the Preferences menu.
Filter Defines a filter to be used in displaying files in the Available Files listbox. Directory or default file extensions may be changed by modifying the filter.
Directories Lists all current directories. Double click on an entry in this box or click an entry, then click the Filter button at the bottom of the form to update the Available Files listbox.
Avvailable files Displays a list of the files that fit the current filter. Select a file by double clicking on a file name in this listbox.
Selected Results File Displays the name of the results file currently selected.
Filter Updates the Directories and Available Files listbox when the Filter field has been modified.
/dallas/users/gamel/pf/forms/.
Select File
Directories
OK Filter Cancel
Available Files
/dallas/users/sip/pf/forms/. /dallas/users/sip/pf/forms/.
[ ]
Filter
/dallas/users/gamel/pf/forms/*.0P2
Selected Results File
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Result File Types
Description:
.xdb: To generate .xdb files, PARAM,POST,0 must be included in the Bulk Data Section.
.op2: To generate OP2 files with geometry, PARAM, POST,-1 or 1
.master/.dball: By default, all data to be stored on the database for restart purposes will be located on the \ DBALL database set DBset). These parameters permit the storage of some data blocks on DBsets other than DBALL, which are defined by the user and specified on the INIT File Management statement. Any or all of these parameters may be set to SCRATCH in order to reduce overall disk space usage; e.g., PARAM, DBUP, SCRATCH or PARAM, DBALL, SCRATCH. However, automatic restarts will be less efficient because data normally assigned to a permanent DBset will have to be recomputed.
.t16/.t19: The analysis results file contains some all of the numerical results computed in the analysis. This file in MSC Nastran is designated as jobname.op2 or jobname.xdb. Because SOL 600 uses the Marc solver, a Marc results file is also available, designated jobname.t16/t19. If you are using Patran, the full set of stress and strain measures are available in the t16/t19 file while the more basic measures are available in the .op2 and .xdb files. The t19 file is an ASCII file. The t16 file is a binary file and can be moved and used on different platforms.
.d3plot: The SOL 700 default output file is the d3plot file which is a binary file including the displacements, stresses and strain output results.
Result File Type MSC Nastran Entry
.xdb PARAM,POST,0 -- Goes in the Bulk Data Section
.op2 PARAM,POST,-1 or 1 -- Goes in the Bulk Data Section
.master/.dbal NASTRAN SYSTEM(316)=19 -- Goes in the Executive Control Section
.t16/.t19 This file is created by default if SOL 600 is used
.d3plot This file is created by default if SOL 700 is used
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Attach XDB – Attaches XDB results file
Read Output2 – Imports old Op2 results file
Attach MASTER – Attaches Master results file results
Attach Output2 – Attaches new OP2 results file
Attach t16/19 – Attaches t16/t19 results file
Attach d3plot – Attaches d3plot
If the newOP2 is attached then it will appear in Analysis > Delete > Output2 Attachment. If the op2 (old format) is imported, it will not appear in Analysis > Delete >. You can delete the old *.op2 results from Results > Delete > Result cases > Pick and delete.
For more information, see: Accessing Results (p. 518) in the Patran Interface to MSC Nastran Preference Guide.
MSC.Mvision Builder and Evaluator 2002 Installation Guide
I n d e xPatran Reference Manual
I n d e x
I n d e xI N D E X
Index
Aanalysis, 2
setup, 9application interfaces, 3application modules, 2, 8
Ffunctional assignments, 5
Ppreferences, 5
Rresults
reading, 13select file, 15
Uuser-added code, 4
Patran Reference Manual
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