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1、如有侵权，请联系网站删除，仅供学习与交流patran错误代码【精品文档】第 18 页ERROR LIST LATEST UPDATE: 20-FEB-2001 CURRENT ERROR LISTThis section includes a description of all known errors and generallimitations in all versions of MSC.Nastran. The field next to the error number indicates the version that the error is corrected. GL in
2、 this field stands for a General Limitation which indicates a fix is not planned. Continuous updates to the error list are available to MSC.Nastran clients on the MSC web page at . The site may be located by clicking on Services and Support.Major CapabilitiesA list of major capabilities is provided
3、to assist the analyst is choosing key-words to search for to locate error that may impact their current project.Error DescriptionEach error has a heading with as many as three entries. The firstentry identifies the major capability affected and is also listed inthe major capabilities index. The seco
4、nd entry identifies either thename of the module in which an abnormal exit occurs or the card typeaffected if computed results are not satisfactory. (For abnormalexits, the last module name that appears in the Performance SummaryTable is usually the module where the exit occurs.) The third entrygive
5、s the symptoms of the error, such as, the MSC/NASTRAN system oruser message number printed just prior to termination or a descriptionof a machine-dependent error. Other symptoms might be missingoutput or wrong answers. Error reports are updated when more facts orbetter avoidance techniques become kn
6、own.NOTE:Beginning with Version 68, MSC/NASTRAN has adopted a Version numberingsystem of the form XX.YY.ZZ, where XX is the major release, YYindicates a minor release with few enhancements and ZZ indicates errorcorrections. Note that modifications to the code that are requiredso that a specific mach
7、ine runs the same as previous releases on othermachines are considered error corrections in this numbering scheme.Thus, there may not be any references in the error list to a specificrelease number. Keyword IndexThe Keyword Index has been removed from the error listSince the error list is maintained
8、 internally at MSC ina relational database and is provided to the user in variouselectronic formats search utilities have replaced the need for akeyword index and the maintenance of the keyword index has beendiscontinued.A list of the major categories follows:Accounting Acoustic Analysis Aeroelastic
9、 Analysis Authorization Axisymmetric Fluid Elements Beam LibraryBuckling Analysis Buckling & Differential StiffnessCase Control Complex Eigenvalues, Component Mode SynthesisComposites Cyclic SymmetryDBC/TRANS/ACCESSDMAPDatabaseDesign SensitivityDocumentationDynamic ReductionDynamic Response Analysis
10、Eigenvalue AnalysisElement Strain EnergyElementsEstimate ExecutiveExecutive LimitsExternal SuperelementsFile Management SectionFrequency ResponseFrequency Response and Random AnalysisGap ConstraintsGeometric NonlinearityGrid Point ForceGrid Point StressGrid Point Stress DiscontinuitiesHeat Transfer
11、AnalysisHydroelastic AnalysisHyperelastic Nonlinear AnalysisInertia ReliefInstallationInterface ElementsIterative SolverLimitation on Problem SizeLoadsMSC/ACCESSMSGMESH, MSGSTRESS, MSGVIEWMaterial Nonlinear AnalysisMaterialsMatrix MethodsMethod SelectionMiscellaneousModal AugmentationNonlinear Analy
12、sisNonlinear Eigenvalue AnalysisNonlinear Slide-Line AnalysisNonlinear Static AnalysisNonlinear Superelement AnalysisNonlinear Transient AnalysisNonlinear Transient Heat TransferOld Design SensitivityOnline Documentation Optimization/Design SensitivityP-ElementsParallel PerformancePlottingPostproces
13、singResponse SpectraRestarts Rigid Elements SSSALTERSSecuritySequencerSingle Point ConstraintsStatic Aeroelastic Analysis Static AnalysisSubmittal Superelements Thermal Stress Analysis Timing Estimate Transient Nonlinear Analysis Transient Response Analysis UtilitiesVirtual Mass 399; 70.5; Eigenvalu
14、e 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
15、 only available for the det method. 745; GL; Plotting - XYOUTPUT - UFM 688, UFM 687 In requesting XYOUTPUT, if the last frame request on an XYPLOT command is for an upper frame only, e.g., .(T1,), then the USER FATAL MESSAGE 688 or 687 will terminate the run. An avoidance is to explicitly insert 100
16、0 for the component of the lower frame plot, e.g., .(T1,1000). 785; 69; 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 in
17、correct format for the mesh entries. 796; GL; Hydroelastic Analysis - AXIF - UFM 2047, UFM 2053 If the harmonics flag is set to NONE in Field 7 on the AXIF entry, then the Case Control command AXIS=FLUID may not be used. 827; GL; Response Spectra - DLOAD, RLOADi, TLOAD - UFM 2135 Scaled Response Spe
18、ctra uses DLOAD Bulk Data entries. They point to DTI entries, and can violate the DLOAD rule that says the Li entries must be unique. However, the DLOAD entry is not checked if no RLOADi or TLOADi entries appear in the Bulk Data Section. It is therefore illegal to have RLOADi or TLOADi entries prese
19、nt when using scaled response spectra. If they are not present, the solution sequence will function properly. 868; 70.7; Miscellaneous - PUNCH - Incorrect Format STRESS(PUNCH) will not properly output the HEXA, PENTA, BEND, BEAM, TRIA6, or QUAD8 elements. Element margins of safety (ROD, CONROD, TUBE
20、, and BAR elements) will produce poor punched formats if stress allowables are not given on the referenced MATi entries. 888; GL; Limitation on Problem Size - Rigid Elements - UFM 3008 The capacity for processing Rigid Elements in the GP4 module is limited since the entire nonzero RG matrix must be
21、stored in memory. Splines are particularly bad. For example, let NS = the number of RSPLINEs (two dependent, five independent), R = the number of RBARs, and NG = the number of grids. Then, (350 X NS + 90 X R) (OC -7 X NG - 3 X BUFFSIZE). For example, if OC = 72000, NG = 1000 and BUFFSIZE = 4166, the
22、n the user is limited to 150 splines. 889; GL; Elements - CELAS - Unintended Constraints Scalar elements connected to noncolinear degrees of freedom introduce constraints which will not appear in the output. 890; GL; Grid Point Force - GPFDR - UFM 3008 The open core requirement for the GPFDR module
23、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. 903; GL; Elements - CONEAX, SORT2 - Incorrectly Formatted Output Conical shell problems do
24、not prepare SORT2 output properly. In addition, the SORT2 requests generate unwanted and meaningless punched output. 916; GL; Plotting - XYPAPERPLOT - Missing Plot Output X-Y paper plots do not include all the features of a graphic plotter. Titles and MAX/MIN functions are about the only features su
25、pported. TICS, DIVISIONS, GRID LINES, and LOG SCALES are not supported. 1022; GL; Nonlinear Analysis - OLOAD - Wrong Answers The resultants for the applied loads are incorrect if cylindrical or spherical coordinates are used. This output is informational only and the solution is not affected. 1065;
26、GL; Superelements - SEMA - SEMA FATAL MESSAGE Superelements may be excluded from assembly in SEKR and SELR (SEEXCLUDE). However, if all upstream superelements are excluded from a given superelement, then the program will fail. An avoidance is to put PARAM,NOUP,-1 in the first Case Control subcase fo
27、r the failing superelement. 1086; GL; Plotting - CONTOUR - UFM 4212 Insufficient open core for contour plotting may result in a misleading message. The avoidance is to increase open core. 1103; GL; Dynamic Response - TRD, TRD1, FRRD, FRR - UFM 3005 If the MGIV method of real eigenvalue extraction co
28、mputes 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 dynamic
29、s. 1125; GL; Sequencer - RESTART, PARAM,NEWSE - Wrong Answers If the sequence processor is used for any part of an analysis, it should be executed on all restarts which input data. The value of PARAM,NEWSEQ should remain unchanged in every run. 1183; GL; Eigenvalue Analysis - READ - Negative Term on
30、 Factor Diagonal If the user requests the eigenvector for an infinite frequency mode, the program may fail. An avoidance is to reduce the ND value on the EIGR bulk data entry to be less than N. The Nth eigenvector is numerical noise. 1308; 68; Aeroelastic Analysis - FA1 - Poor Answers The eigenvalue
31、 extractions by the PK and KE methods are performed in lower precision than most other calculations (single precision). Excessive truncation error may occur in some problems on short-word machines. The only machines that will not experience this problem are the CRAY, CDC and NEC computers. Contact M
32、SC for avoidance procedure. 1357; 70.5; 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 goo
33、d 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. 1405; GL; Elements - HEXA - Stress Discontinuities Transitioning mesh densities by connec
34、ting two elements to one with midside nodes causes local stress perturbations, because the assumed displacement shapes at the interface are not compatible. An avoidance is to use PENTA elements to change the mesh size. 1551; GL; Eigenvalue Analysis - READ - Eigenvalues Not Found The wrong reason for
35、 termination may be given if the region for search listed on the EIGB or EIGR bulk data entry does not include negative eigenvalues or if NE is underestimated. An avoidance is to increase the number of roots desired (ND) and the number estimated (NE) to ensure all roots in the region are found. 1575
36、; 69; 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. 1581; GL; Elements - SOL 64, 66 - Various Symptom
37、s of Numerical Instability If flat plate models have out-of-plane singularities when unloaded, but have enough angle between adjacent plates to constrain singularities in the deformed state, various numerical problems such as overflow, machine-dependent messages from trigonometric functions, or othe
38、r problems may arise. An avoidance is to use PARAM,K6ROT,1.0 to provide stiffness for the out-of-plane singularities. 1584; GL; Geometric Nonlinearity - GNFM - SFM 3007 If PARAM,TESTNEG,-2 is used in SOL 64, and grid point singularities exist, the computational zeroes they cause on the diagonal of t
39、he factor of the stiffness matrix can be small negative numbers, leading to the error message SYSTEM FATAL MESSAGE 3007. PARAM,TESTNEG,-2 should not be used in Subcase 1. PARAM,AUTOSPC,YES will remove this type of singularity. 1664; GL; DMAP - Dummy Elements - Wrong Answers User-written element subr
40、outines that use OXFORM=5 produce incorrect results from the EMA module. The values of OXFORM=3 or 4 may be used instead. 1679; 66; 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 eleme
41、nt 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 . 1712; GL; Frequency Response Analysis - RANDOM - SWM 3002, UWM 979 If a non-existent point is referenced in an output request when there are multiple s
42、ubcases, the RANDOM module will cease processing at that point and issue SYSTEM WARNING MESSAGE 3002. The following user warning message is now issued: 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
43、BLOCK 102 1738; 66; 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. 1739; 66; DMAP - DIAG 4 - Addressing ERROR