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FEBio 4.5
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@SteveMaas1978 SteveMaas1978 released this 16 Jan 18:45
· 645 commits to master since this release
v4.5
e4bbe2d

New Features:

  • A simple beam formulation has been implemented in FEBio. The stress-strain relation is linear, but allows for large deformations. It can be used in both quasi-static and dynamic analysis.
  • Added option to stiffness_test diagnostic to output the actual and approximate stiffness matrices.
  • Added output_stride option to control data output frequency.
  • Added support for body loads to linear trusses.
  • Added support for exporting stresses for linear trusses.

Improvements:

  • Made parameters of muscle and tendon materials mappable.
  • Added unit specification to offset parameter in sliding-elastic contact interface
  • Added check to see if XML writer failed to create the file.
  • Modified "force" parameter definition of the surface "force" load so that it shows units and cannot be assigned a load controller.
  • Added units and initial values for "isotropic elastic" material.
  • Added check in reading Elements section of input file to make sure element IDs are increasing.
  • Added support for writing element data with NODE format to VTK file (as point data).

Bug fixes:

  • Fixed some bugs in node-element list and element-element list classes.
  • Plot file now stores the FEFacetSets, not the FESurfaces because the latter can change in restarts, which could corrupt the plot file.
  • Fixed typo when reading rigid bc from 2.5 format. Also added check when setting parameter value to avoid crash.
  • Fixed bug in FindSSI function that assumed one-based node indexing.
  • Fixed issue with beam's reference frame. Line searches can now be used with beams.
  • Fixed minor issue in output of shell directors.

Documentation:

  • The plot file format is now described in Appendix D of the FEBio user manual.
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