This file contains the additional errors corrected in MSC.Nastran 2005r3b since the inital release of MSC.Nastran 2005r3 (a.k.a. 2005.5.0) 1-19887421 2005.5.1 Elements - QUAD4, TRIA3, K6ROT - Different behavior for membrane only elements in V2005R2 At the request of a few clients, a new NASTRAN keyword has been added to Version 2005r3b (a.k.a. version 2005.5.2) and MD Nastran 2006r1a that allows users to obtain old answers with membrane elements and k6rot. Note that MSC does not believe that k6rot should ever be used with membrane elements and the correction to error 1-18688331 blocked its use in V2005r2. The user interface to obtain the old answers is: NASTRAN K6ROTMEM=1 1-20135658 2005.5.1 Dynamic Response - PBUSH, PSHELL - Incorrect structural damping GE Variable GE damping on the PBUSH or PSHELL entries may lead to incorrect damping and thus wrong answers in Version 2004 and Version 2005. Avoidance: Although the error is only likely to occur for large models, there is no avoidance other than not using this capability. The error has been fixed in version 2005.1.2. Requested platforms have been put to the Training and Support - Nastran Product Update web site. 1-22063271 2005.5.1 Miscellaneous - DMIG, DMIK - Inadequate User Fatal Message, UFM 4508 (MTRXIN) The following user fatal message has been improved in Version 2005r3b to help identify the grid and component that has been identified twice. *** USER FATAL MESSAGE 4508 (MTRXIN) A GRID AND COMPONENT HAS BEEN SPECIFIED TWICE ON DMIK WKK 1-22717058 2005.5.1 Buckling Analysis - EIGRL - SOL 105 may abort In rare cases buckling problems may abort. Avoidance: This issue may be avoided by specifying a shift scale of 0.1 in the 8th field of the EIGRL entry. 1-23313501 2005.5.1 External Superelements - SPCF, EXTOUT - SFM 5423 in subsequent assembly run In Version 2005.1, an SPCF request in an external SE creation run results in failure with SYSTEM FATAL MESSAGE 5423 in a subsequent assembly run. In previous versions, the job ran, but resulted in incorrect SPCF results for interior points of the external SE. This error has been corrected in MSC.Nastran 2005.5.1 and MD Nastran 2006.0.1 Avoidance: Employ the following alters: compile extout alter 'extunit','' $ type parm,nddl,i,y,extunit,spdrrat $ alter 'outprt','' $ outprt casex,ects,bgpdts,sils,xycdbs,,,,,,,,,,,edts,/ v01dr0,vspcg,vmpcg,junk,/ s,n,sdrs/0/'sparse'/spdrrat $ dbstatus vspcg//s,n,novspcg $ if ( novspcg>0 ) then $ upartn uset,vspcg/vspc,,,/'g'/'s'//1 $ paraml vspc//'trailer'/5/s,n,nzspc $ CALL CFORCE1 MSF,,,,BSF,,,,KSF,K4SF,, ,,,,,,,,vspc,uset/ MSF1x,BSF1x,KSF1x,,,,vscg/ 'reig '/'reig '/'spcforce' $ endif $ novspcg>0 call xAdd5 vscg,v01dr0,,,/v01s0/cu/cu/cz/cz/cz $ diagonal v01s0/v01s/'whole'/0. $ paraml v01s//'trai'/6/s,n,dens//s,n,nov01s $ $ if it's full (sdrs=0) then leave it full if ( sdrs<>0 ) then $ if ( nov01s<0 ) then $ sdrs =1 $ none else if ( dens/1000 alter 'call xadd5','' $ alter 'nouoo','nouoo'(1,1) $ paraml uoo//'null'////s,n,nulluoo $ if ( nulluoo>-1 ) then $ alter 'sdr2'(2),'' $ if ( nosset>-1 ) then $ upartn uset,ugo/ufo,,,/'g'/'f'//1 $ CALL CFORCE USET,,ufo,,MSF,,BSF,,KSF,K4SF,,,,cmlama,,/ QGo/ 'reig '/'reig '/'spcforce'/false/false $ endif $ nosset>-1 SDR2 CASEx,CSTMS,MPTS,DIT,EQEXINS,,ETT,nulllama,BGPDTS,,qgo, ugo,EST,XYCDBs,,,,,,,,,,,,,,/ ,iqg1o,IUG1o,IES1o,IEF1o,,,,,,,/ 'reig'/S,N,NOS2A/S,N,NCOMPS $ alter 'nouoo'(3),'' $ endif $ nulluoo>-1 1-23509651 2005.5.1 Elements - GPSTRAIN - Wrong Answers The GPSTRAIN ouptut "PRINCIPAL STRAINS AT GRID POINTS" is wrong for all solid elements (CHEXA, CPENTA, CTETRA). The Von Mises and Max Shear strain output is incorrect for shell elements. Avoidance: There is no avoidance other than to use the element strain output. The error is corrected in MD Nastran 2006r1. 1-23825097 2005.5.1 Elements - ESE - Wrong Answer for Total Strain Energy with DMIGs/K2GG The values reported for the TOTAL and all elements in set ESE are wrong if there is more than one subcase and K2GG / DMIGs are present. Jobs with a single subcase work correctly. The value reported for TOTAL STRAIN ENERGY in the 1st subcase apparently sums in the DMIG STRAIN ENERGRY contributions from ALL subcases, the remaining subcases include zero STRAIN ENERGRY contribution from the DMIGs. 1-24173515 2005.5.1 SOL 600 - PBEAML - PBEAML I-beam property with large field format does not translate correctly For the large format, the job with I-beam cross section is not translated correctly to marc input file. $ Elements and Element Properties for region : i-sect PBEAML* 1 1 I * * .8 .4 .4 .1 * .1 .1 $ Pset: "i-sect" will be imported as: "pbeaml.1" Marc input file was generated: BEAM SECT PBEAML 1I SHAPE 5, 10,6,10,6,10 -2.000000E-01, -5.960464E-09, 0.0,0.0, 2.000000E-01, -5.960464E-09, 0.0,0.0, 4.000000E-01, 1.000000E-01, 1.000000E-01, 2.000000E-01, -5.960464E-09, 0.0,0.0, 0.000000E+00, -5.960464E-09, 0.0,0.0, 2.000000E-01, 0.000000E+00, 0.000000E+00, 0.000000E+00, -5.960464E-09, 0.0,0.0, 0.000000E+00, 7.500000E-01, 0.0,0.0, 7.500000E-01, 1.000000E-01, 1.000000E-01, 0.000000E+00, 7.500000E-01, 0.0,0.0, -2.000000E-01, 7.500000E-01, 0.0,0.0, 2.000000E-01, 0.000000E+00, 0.000000E+00, -2.000000E-01, 7.500000E-01, 0.0,0.0, 2.000000E-01, 7.500000E-01, 0.0,0.0, 4.000000E-01, 0.000000E+00, 0.000000E+00, Avoidance: Use the short format. 1-24206471 2005.5.1 SOL 600 - RBE2 and SPC1 written in large field format is not translated correctly RBE2 and SPC1 written in large field format are not translated into marc input correctly in SOL 600. Avoidance: Use small field format 1-24262578 2005.5.1 Large Models - IA64 Linux - Signal 11 A signal 11 may occur on large models on IA64 Linux systems if the stack size is limited. Avoidance: increase stack size with either: - The command "ulimit -s unlimited" or - modifying /etc/security/limits.conf The stacksize may be displayed with "unlimit -a" 1-24374298 2005.5.1 Superelements - SEBULK EXTOP4 - UFM 4156 SEMA If the KAA matrix in OP4 format is not Gsize (i.e. GRIDs on EXTERN <> 123456) then the following error will occur during the assembly run: *** USER FATAL MESSAGE 4156 (SEMA) DIMENSIONS OR TYPE OF DATA BLOCK XAAV , SUPERELEMENT 10 TRAILER=( 22 22 6 2 12 992) ARE INCONSISTENT WITH SUPERELEMENT MAP. 0FATAL ERROR Avoidance: User must merge the matrix to Gsize with dmap. This error is fixed in MSC.Nastran 2005.5.1 and MD Nastran 2006.0.1 1-24494561 2005.5.1 Dynamics - SPCD enforced motion, PARAMs ALPHA1 and ALPHA2 - Wrong answers If Rayleigh damping (PARAMs ALPHA1 and ALPHA2) is requested with SPCD enforced motion then the answers will be wrong. This error has been fixed in MSC.Nastran 2005.5.1 and MD Nastran 2006.0.1. Avoidance: Insert the following DMAP alter: compile cforce1 alter 1 TYPE PARM,NDDL,CS,Y,ALPHA1,ALPHA2 $ Rayleigh Damping TYPE PARM,,CS,N,ALPHA1N,ALPHA2N $ ALPHA1N=ALPHA1 $ ALPHA2N=ALPHA2 $ alter 'call xADD5 BXY,B2XY,KXY,K4XY' CALL XADD5 mxy,kxy,bxy1,,/bxyx/alpha1n/alpha2n/cu/cz/cz $ equivx bxyx/bxy1/-1 $ alter 'call xADD5 BXY,B2XY,,,' CALL XADD5 mxy,kxy,bxy1,,/bxyx/alpha1n/alpha2n/cu/cz/cz $ equivx bxyx/bxy1/-1 $ endalter 1-25108891 2005.5.1 SOL600 - PARAM,WTMASS may be ignored if fixed field is used - Wrong Answers In SOL 600, param WTMASS is ignored and is not translated if the fixed field format is used and WTMASS doesn't start in fields 9,11, or 16. This will cause errors if mass is important in the solution. Avoidance is to use FREE field format, or ensure the W in WTMASS exits in fields 9,11,16. 1-25797677 2005.5.1 Heat Transfer - VIEW, RADSET - SFM 3002 (RMG2) When the number of cavities defined on a RADLST entry exceed the number of cavities specified on the RADSET entry the following fatal message will be issued: *** SYSTEM FATAL MESSAGE 3002 (RMG2) EOF ENCOUNTERED WHILE READING DATA BLOCK EST (FILE 101) IN SUBROUTINE RMG2 0FATAL ERROR 1-25895411 2005.5.1 Miscellaneous - INPUTT2 - ILP-64 version, Akusmod Interface Fails with UFM 1206 (INPTX2) Nastran ILP-64 systems (mode=i8) will fail reading the Akusmod "Fort.70" coupling matrix with USER FATAL MESSAGE 1206 in INPTX2. Avoidance: Apply the following DMAP alter: compile read70 alter 'inputt2','' INPUTT2 /CASE0,CASESTR,CASEWET,CASELU,CTRFLDA/-1/IUNIT// s,n,name1/s,n,name2/s,n,name3/s,n,name4/s,n,name5// 'akmlist'/'akmlist'/'akmlist'/'akmlist'/'akmctrf' $ alter 'inputt2'(2),'' INPUTT2 /casep,,,,/0/IUNIT////////'akmpanel' $ alter 'inputt2'(3),'' INPUTT2 /omegaz2,,,,/0/IUNIT////////'akmomega' $ alter 'inputt2'(4),'' INPUTT2 /case2ab,,,,/0/IUNIT////////'akmlist' $ alter 'inputt2'(5),'' INPUTT2 /omegaz3,,,,/0/IUNIT////////'akmomega' $ alter 'inputt2'(6),'' INPUTT2 /case3ab,,,,/0/IUNIT////////'akmlist' $ 1-26152834 2005.5.1 Aeroelastic Analysis - AEUXREF - Reference stability derivatives incorrect if aeuxref=trim If the user puts "aeuxref=trim" in the case control for a sol144 analysis, the resulting stability derivatives for the reference point will be wrong. 1-27310471 2005.5.1 Performance - DCMP - Poor Performance on HP IA64 V2005.5.0 (a.k.a 2005r3) The performance in the DCMP module of Version 2005.5.0 HP IA-64 systems may be severely degraded. Since this is a performance critical module, MSC recommends that the analysis executable be replaced. A corrected executable may be found on the product update site at: http://www.mscsoftware.com/support/software_updates/index.cfm#nastran 1-32732801 2005.5.1 MDACMS - READ - Poor Performance for large problems Assumptions made inside the READ module are may be too conservative and may result in poor performance in MDACMS for large models. Avoidance: Increase memory. 1-14144521 2005.5.1 Superelements - BNDFIX1 - Unexpected ASET when QSET omitted If BNDFIX1 degrees of freedom are specified, but no QSET is specified, then the BNDFIX1 entry is ignored. Avoidance: Use the ASET entry. 1-25765671 2005.5.1 Acoustic Analysis - PFPANEL - Wrong Answers 1. If Keyword "PHAS" is specified on the PFPANEL command, the real and imaginary part printed in the .f06 are wrong. Avoidance: Do not specifiy "PHAS" keyword. 2. If there are panels that are not part of the wetted surface, the panel names in OAPPF1 and in the .f06 are wrong. Avoidance: Do not define panels that are not on the wetted surface.