This is a major release. The focus this time has been on robustness and testing. Hopefully, it shows. The software has also been relicensed to be BSD-3, which is a more permissive license and is the same one that numpy, scipy, and matplotlib use.

Unfortunately, the GUI is more complicated.

• For open source projects : GPL 2/3
• For companies that pay a license to Riverbank : proprietary
• For companies that don't pay a license fee : GPL 2/3

However, you may distribute an unmodified binary.

• Programmatics:

  • Dropping Python 3.3 support
  • Adding Python 3.6 support
  • Supports Python 2.7, 3.4-3.6

• OP2

  • preliminary random results (ATO/CRM/PSD/RMS/NO)
  • improved geometry support
  • MONPNT1/MONPNT3 reading
  • MATPOOL matrices

• F06 scripts

  • added a preliminary flutter (SOL 145) parser
    • supports multiple subcases
    • PK and PKNL methods supported
    • plot_Vg_Vf(...), plot_Vg(...), plot_root_locus(...)
    • input/output units
    • mode switching not fixed yet

• GUI:

  • complex displacement support
  • animation support
  • vector results (real/complex)
    • SPC Forces, MPC Forces, Load Vector, Applied Load
      • minimal control presently
    • No Grid Point Forces (e.g., freebody loads, interface loads)
  • signficant speedups

• BDF

  • 312 cards supported

  • faster node transforms using:

    >>> icd_transform, icp_transform, xyz_cp, nid_cp_cd = get_displacement_index_xyz_cp_cd(dtype='float64, sort_ids=True)
    >>> xyz_cid0 = transform_xyzcp_to_xyz_cid(xyz_cp, icp_transform, cid=0, in_place=False)
    

  • simplified card adding

    >>> model.add_grid(nid, xyz=[4.,5.,6.], comment='nid, cp, x, y, z')
    

• comments can now be created without worrying about $ signs

  >>> model.add_card(['GRID', 10, None, 4.0, 5.0, 6.0], comment='GRID comment\ngrid,nid,cp,x,y,z')
  

  $GRID comment
  $grid,nid,cp,x,y,z
  GRID,10,,4.0,5.0,6.0
  

  • unit conversion

• GUI

  • buttons for picking, rotation center, distance
  • PyQt5 support
  • QScintilla & pygments support for scripting code editor

• Matlab integration

  • pyNastran works with Matlab 2014a+