Download - Caesar Autopipe Tutorial
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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
AutoPIPE / Caesar TranslationCaesar Neutral File VersionsTransfering Caesar Model to AutoPIPETransfer Large Caesar ModelsAutoPIPE Configurable MappingTranslation LimitationsComparative ResultsWrite AutoPIPE Model to Caesar