pynastran读取bdf格式文件

See the "bdf_xxx.txt" or "op2_xxx.txt" files for a list of the BDF/OP2 features that are supported. They're nice and long :) This document discusses the major features (and limitations) added in each version of the software. See the HTML documentation for more information. If you like it/want to help leave some feedback on the Dicussion Page: http://groups.google.com/group/pynastran-discuss?pli=1 If you have a bug/want a new feature or card, leave some feedback on the Issues List: http://code.google.com/p/pynastran/issues/list This code was written entirely in Python and should install easily. *** Not done.... -----------------------v0.6.1 released 2013/06/13----------------------- BDF Bug Fixes - Parsing of "1.2345D+04". It worked in Python 2.6, but not 2.7. - RBE2 card with alpha field. - active I12 field on PBAR card now disables AssertionError if K1 or K2 are blank - fixed bug in LSEQ card where table field was cross-referenced as a load (field #4) OP2/F06 Bug Fixes - improved memory usage in real plates (stress/strain) when writing F06 -----------------------v0.6 released 2013/05/07----------------------- Overall Notes - significant improvement in BDF reader - BDF reader now supports comments. It's stored on the card._comment variable, but not all cards have one, so use the card.comment() method. - BDF reader verifies types on the card fields (e.g. float is not allowed on integer/blank field) - integrated readBDF_Punch into readBDF method with a punch=True flag - minor bug fixes to OP2 reader - minor bug fixes to F06 reader - more PEP-8 Overall BDF - significant improvement in BDF reader - BDF reader now supports comments. It's stored on the card._comment variable, but not all cards have one, so use the card.comment() method. - BDF reader verifies types on the card fields (e.g. float is not allowed on integer/blank field) - integrated readBDF_Punch into readBDF method with a punch=True flag Added BDF - NLPCI, PRAC2D, PRAC3D, PLPLANE - added _verify methods to many cards -----------------------v0.5 released 2012/08/13----------------------- Overall Notes - lots of new BDF cards - OP2 now supports element real/imaginary forces - OP2 is much, much better at reading frequency analysis results - new OP4 reader in pure Python. Writer isn't fully functional yet. - improved code to better support Python 3 - implementing PEP-8 BDF API Changes - moved files around; if you want your imports to work, import from bdf.py - moved storage location of EIGC, EIGP to cMethod - grav card are now accessed using Load(lid) and not Grav(lid) - grav card loadID renamed from sid to lid - LOAD cards now have a getReducedLoads() which gets the scale factors and load objects for all sub-loads (supports LOAD, FORCEx, MOMENTx, GRAV) not implemented across all load types, so having a LOAD card is still a good thing - LOAD objects now have a getReducedLoads() method that determines a list of scaleFactors and FORCE/MOMENT/GRAV/etc. cards BDF Bug Fixes - SPOINTs were lost when cross referenced - EIGC, EIGP now stored in self.cMethods instead of self.methods - TABRNDG is now in randomTables - CREEP field g now reads/writes out - PLOAD4 bug with g1 vs g3/g4 - EIGB keeps method (INV/SINV) now (not clear if there's a default) - QBDY3 cross referencing fixed - TSTEPNL fixed possible issue (kStep default) caused by unlisted METHOD field - SLOAD nodes were referencing loads instead of nodes - PFAST kr3 was writing out as kr2 - PSHELL now supports mid2=-1 - fixed PVISC, PGAP cross referencing (these dont require it) - CELASx and CDAMPx cards now allow empty fields / grounding - GRAV cards don't crash if the max N value == min N value Added BDF - ASET, ASET1, BSET, BSET1, CSET, CSET1, QSET, QSET1 - DMIG, DMIJ, DMIJI, DMIK - TABRNDG - TLOAD1, ACCEL1,RFORCE, PLOADX1 - SPLINE4, SPLINE5 - CBUSH1D, PBUSH1D - PRAC2D, PRAC3D Removed BDF - CONM1 Overall OP2 - moved files around; if you want your imports to work, import from op2.py - test_op2 now crashes if there isn't a .op2 in the filename - major changes to reader to support non-standard solutions reader should be much better at getting correct values - added majority of element forces - added majority of element heat fluxes - significantly more support for complex results - added plotting support for "standard" results (real) - displacement, velocity, acceleration, eigenvectors, spcForces, mpcForces, gridPointForces, appliedLoads, loadVectors, forceVectors OP2 API Changes - renamed many of the objects to follow pep-8, shouldn't really affect much code - complex tables now have same format as the real tables all results are stored in real/imaginary format and not magnitude/phase, regardless of what was defined in the OP2 Overall F06 Reader/Writer - updated to work with OP2 updates Added F06 Writer - many, but not all loads Overall GUI - added Cart3d support - added Panair support Added GUI - CQUADR, CTRIAR GUI Bug Fixes -----------------------v0.4.1 released Py2.x 2012/06/05----------------------- Overall - Python 3.x works! BDF Bug Fixes - coordinte system transpose bug (messed up most coordinate systems) affected CORD1R, CORD2R, CORD1C, CORD2C, CORD1S, CORD2S - Fluid Structure Interaction coordinate system of -1 is now allowed - nastran double precision format (e.g. 1.23456D+03) now supported - better rounding of floats when writing BDF - SET3 printing Added BDF - coordinate systems in CONM2 are fully supported - GRAV card prints out nicer Added OP2 - GEOM1S, GEOM2S, GEOM3S, GEOM4S tables (for Radioss) -----------------------v0.4 released 2012/04/23----------------------- Overall Notes - new ASCII/binary OP4 reader for dense matrices - lots of BDF bug fixes - lots of new BDF cards - added support for OpenMDAO user-defined parameterization syntax %varname - new results in OP2 - new F06 Reader/Writer - F06 Writer integrates with OP2 Reader Overall OP4 - ASCII/binary reader - sparse matrices not supported Overall BDF - 180 total cards - added tab support (no mixed tabs, spaces, commas) - reworked format of bdf_crossReferencing.txt to be more like bdf_readWrite.txt - added test code that compares cards values from one run to the next - added support for THRU-BY on certain cards (e.g. QBDY3) - added new custom Exceptions to make errors messages clearer - added support for user defined optimization values (using %varName) values set with "bdf.setDynamicSyntax(dictOfVars)" BDF API Changes - removeCards(['GRID','CQUAD4']) is now called disableCards(cards) - removed obsolete isPrintable and Is methods from BDF class - added Mid1(), Mid2(), Mid3(), Mid4() methods for PSHELL. Mid() now returns Mid1() or Mid2() depending on the form of the PSHELL Mass() calculated based on mid1 (or mid2 if mid1=None) per QRG - Tri-type elements are now TriShells instead of CTRIA3s (same for QUADs, QuadShells) - component constraints (e.g. 123456) on GRID, SPC, SPC1 and MPC are now strings for easy looping instead of a single integer (default='') - added Mids() for PCOMP/PCOMPG - added getNodeIDToElementIDsMap(), getPropertyIDToElementIDsMap(), getMaterialIDToPropertyIDsMap() limited 0D,1D element support (e.g. CBAR, CBEAM, CELAS1, etc.) for these methods BDF Bug Fixes - printCard can now handle cards with an embedded line of Nones with data below. This is a rare bug but affects the NLPARM - fixed minor bug with small values not printing that were slightly above the tolerance level - fixed bug in CONM2 with inertia terms - PCOMP can now have 1 ply per line or 2 plies per line - PCOMP doesnt los