Page | 1 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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AUTOPIPE / CAESAR TRANSLATION - Bentley · PDF fileBut these can be changed to any AutoPIPE load case e.g. first 6 ... Tools > External Interfaces > Caesar II Neutral File...
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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
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
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
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