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AUTOPIPE / CAESAR TRANSLATION

CONTENTS

AutoPIPE / Caesar Translation ........................................................ 1

Caesar Neutral File Versions .......................................................... 2

Transfering Caesar Model to AutoPIPE ............................................. 3

Transfer Large Caesar Models ........................................................ 9

AutoPIPE Configurable Mapping.................................................... 11

Translation Limitations ................................................................ 14

Comparative Results ................................................................... 15

Write AutoPIPE Model to Caesar ................................................... 18

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CAESAR NEUTRAL FILE VERSIONS

Confirm Version of AutoPIPE (Help> About) and version of CAESAR file that can be imported.

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TRANSFERING CAESAR MODEL TO AUTOPIPE

Generating Caesar cii file in Caesar v5.0 to v5.3

Open Caesar and go to the Tools menu

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Click Browse button to open dialog below to

select the Caesar input file (*.C2 or *._a)

Convert Caesar *.C2 (v5) or *._a (pre v5) Caesar file to

cii

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Note: The following error may occur when a CAESAR *.CII file is opened in AutoPIPE:

forrtrl: severe (64) - Input conversion error

Older builds of CAESAR 5.3 have an issue with $CONTROL section - where location of a variable was incorrect. This is a known issue - that is also mentioned in release notes of CAESAR. Install latest SP2 of CAESAR 5.3 before exporting CII file.

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In AutoPIPE

V8i v.9.4 and higher: File > Import> Caesar (*.cii), Select the cii file

V8i v.9.3 and lower: File > Open > Caesar (*.cii), Select the cii file

AutoPIPE V9.2 or later

Select the AutoPIPE input working units

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AutoPIPE Pre-V9.0

The matching Caesar Units file must be selected

Autopipe Units can be any from drop down list.

Caesar units file is *.c2u which must match the units at the bottom of the cii file

Caesar units file is SIMM.c2u matches

the units at the bottom of the cii file

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The model opens in AutoPIPE

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TRANSFER LARGE CAESAR MODELS

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AutoPIPE

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AUTOPIPE CONFIGURABLE MAPPING

CIIMAP File in AutoPIPE program folder

• Piping Code • Material • Supports • Force Moments, Displacements, Uniform Loads and Cut Short • Tees • Hanger Design Code • Convert Caesar RIGID Elements • RIGID Stiffness • Default Flange length • Caesar Node Names • Writing –Y support • Default EXEC Options

Part copy of CIIMAP file below:

////////////////////////////////////////////////////////////////////////

/// Mapping of components between Caesar II and AutoPIPE.

///

/// Note that this file is not free format. Format of each section

/// is fixed (rows and columns). Items outside these sections are

/// not read.

////////////////////////////////////////////////////////////////////////

/// Import (CII -> AP)

/// Piping code mapping. Leave unsupported codes as blank. Maximum 30

/// Piping code is selected based on the first allowable auxilary data

///

/// Col 1: CII piping code number

/// Col 2: AutoPIPE piping code designator

/// Col 3: AutoPIPE piping code number (IRCODE)

/// (2x,i5,1x,a5,1x,i5)

////////////////////////////////////////////////////////////////////////

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#$ IMPCODE

1 B31.1 1

2 // not used

3 B31.3 3

4 B31.4 4

5 // B31.5 - not available in AutoPIPE

6 // not used

7 // not used

8 B31.8 8

9 O31.8 // B31.8 Offshore

10 // not used

////////////////////////////////////////////////////////////////////////

/// Import (CII -> AP)

/// Load case mapping (20 cases). Displacement, Forces and Moments

/// and uniform loads defined in auxiallary screens are applied to

/// load cases defined below.

///

/// Col 1: Load case

/// (2x,3(a3,1x))

////////////////////////////////////////////////////////////////////////

#$ IMPLDCASE

U1 U2 U3 U4 U5 U6 U7 U8 U9 // Forces and Moments

T1 T2 T3 T4 T5 T6 T7 T8 T9 // Displacement

U1 U2 U3 // Uniform loads

GR // Cut short - single load case

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Note: Typically in Caesar up to 9 displacements are combined with thermal loadings in the Caesar analysis module. Hence these are defined T1 to T9 in the CIIMAP file. But these can be changed to any AutoPIPE load case e.g. first 6 cases maybe thermal and last 3 cases may be seismic E1 to E3 as below.

All displacements are imported as XTRA data > imposed displacements and not as thermal anchor movements

////////////////////////////////////////////////////////////////////////

#$ IMPLDCASE

U1 U2 U3 U4 U5 U6 U7 U8 U9 // Forces and Moments

T1 T2 T3 T4 T5 T6 T7 T8 T9 // Displacement

U1 U2 U3 // Uniform loads

GR // Cut short - single load case

////////////////////////////////////////////////////////////////////////

#$ IMPLDCASE

U1 U2 U3 U4 U5 U6 U7 U8 U9 // Forces and Moments

T1 T2 T3 T4 T5 T6 E1 E2 E3 // Displacement

U1 U2 U3 // Uniform loads

GR // Cut short - single load case

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TRANSLATION LIMITATIONS

Caesar neutral file format (*.cii) does not support the following:

• Load combinations • Beams • Hydrodynamic data • Point Static Earthquake Factor • User Nozzle Flexibility • User Weld Efficiency • Flanges not supported in Caesar mapped to RIGID Options or

Valve • Soil Spring data • Wind loading data • Only 9 displacements in Caesar • Only 3 seismic cases (UDL g) in Caesar

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COMPARATIVE RESULTS

Sample Model has comparative Non-Linear Thermal Results within 6%. AutoPIPE has more advanced non-linear analysis engine with load sequencing and expect more accurate non-linear results than Caesar.

Input Data

Piping Code = B31.3 : 2006

Pipe OD = 1370.0000 Allow Stress = 150 N/mm2

Wall Thickness = 10.000 Bend Radius = 1370 (bend 70 = 2055), close miters

Material : Carbon Steel Support friction = 0.3

Temp = 200C, Press = 0.25 N/mm2 2 Valves at nodes 252, 263

Caesar

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AutoPIPE

Thermal Displacement Results

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WRITE AUTOPIPE MODEL TO CAESAR

Geometry, Pipe Sizes, Supports, Materials, Tees, SIFs, Nozzles, RIGIDS, Valves, Flanges,Reducers, Expansion Joints, Support Tags, Pressure/ Temperatures, Seismic, displacements, Force/moments, Cut Short etc

AutoPIPE V8i 9.2 and lower

File> Save As> CAESAR (*.cii)

AutoPIPE V8i 9.3 and Higher

File> Export> CAESAR (*.cii)

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Tools > External Interfaces > Caesar II Neutral File

“Convert Neutral file to Caesar Input file”

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Caesar Tee / Hanger Data

AutoPIPE Tee / Hanger Data