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Nastran Solver Known Issues 2023

3rd Party Solvers

Linear static model with shells crashes with OPTIMIZESETTINGS=FUSION.

Linear Stress with Contact model fails with singularities at various mesh sizes.

Error termination occurs when NCONTACTGEOM=0.

Core Nastran

Results are wrong in beam/bar in nonlinear subcases with temperature load.

T2093 error is produced with a very large model (i.e. very fine mesh) with mesh table usage.

Topology Optimization - MILL option being ignored w/ TET elements.

Offset bonded contact does not work in thermal analysis.

Multiaxial Fatigue with SPCD enforced displacement results in zero load applied.

Use of convection load to apply heat to the part results in temperature lower than ambient temperature.

Heat flux result is wrong on parabolic shell elements.

Core Nastran, OP2 Translator

OP2 files does not have the ply results for laminate.

Solution - Dynamics

DDAM analysis with TRSLDDAMDATA=ON generates bad FNO file when INMEMORYIO=ON.

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