pyNastran v1.3.2 has been released (2020/4/8)

With Python 2 now officially dead, it's time for a new killer feature to get the last few people to switch.

There is now support for writing OP2 files! They're difficult to create from scratch, but modifying an existing one isn't difficult. This includes geometry support.

In addition, many new OP2 results have been added. Modern NX Nastran should work much better.

Better yet, check out this blog post covering Flutter Analysis in pyNastran

Programmatics:

• Supports Python 3.7 and 3.8

• Dropping Python 2.7 and 3.6 support

• GUI is compatible with PyQt5 and PySide2

• improved testing of old versions of packages

BDF:

• enhancements

  • 405 cards supported (up from 373)

  • improved mesh utilities

    • bdf mirror, bdf convert, bdf export_caero_mesh

    • additional bdf scale, which takes arbitrary mass, length, time, pressure, or velocity scale factors (3 of 5) to apply a scaling law

  • added deck guessing with punch=None

OP2:

• enhancements:

  • OP2 write support

  • fixed most pandas deprecation warnings/added support for pandas 0.25

  • much improved NX 2019.2 support

• minor enhancements:

  • more hdf5 results

  • a few more cards supported in the OP2 geometry reader

  • preliminary NX 64-bit support

  • more MSC versions supported

  • sped up R1TABRG (optimization) reading

  • various geometry cards added

  • supports more PARAM reading

• new results:

  • composite failure indicies (OEFIT)

  • sensitivity support (DSCMCOL)

  • Cambpell diagrams (CDDATA)

  • eigenvectors (BOPHIGF)

  • grid point forces SORT2 (OGPFB2)

  • stress/strain/force

    • random stress/strain (OESVM1/2, OESVM1C, OSTRVM1/2, OSTRVM2, OESXRM1C, OESXNO1, OESXNO1C)

    • real/complex stress/strain/force output for centroidal CQUADR/CTRIAR

    • complex CBEAR forces

    • real CFAST, CWELD forces

    • nonlinear cbush stress/strain/force

  • other

    • PSDs

    • optimization

      • convergence table

      • design variables

      • weight, displacement, stress, strain, force, composite stress, composite strain, fractional mass response

  • SOL 401/402 results:

    • eigenvalue_fluid (LAMAF, LAMAS)

    • eigenvectors (BOPHIGF, BOPHIGS)

    • temperature (OTEMP1)

    • solution set

      • results: displacement, velocity, acceleration, eigenvectors:

      • tables: OUXY1, OUXY2, OPHSA

GUI:

• enhancements:

  • partial custom results many now be loaded

  • animation now supports complex fringe

  • result case description now shows the mode/time/frequency

  • result case description now shows the min/max value as well as the location

  • map centroidal to nodal option

  • adding node/element highlight menu

  • adding node/element mark/label menu

  • result case description now shows the min/max value as well as the location

  • result case description now shows the mode/time/frequency

• minor enhancements:

  • added export result option to right-click menu

  • more keyboard shortcuts

• nastran:

  • geometry:

    • added preferences for geometry/results to speed up model loading

    • element & material coordinate systems

  • results

    • added acoustic displacements (OUG1F)

    • real/complex stress/strain/force results

      • plate by upper/lower, composite plates by ply, bars, rods, springs, cbush, cdamp

    • fractional mass response

F06:

• KE support for plot_145

Many bug fixes and a few more details on features, can be found in the Release Notes.