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Nastran Solver Fixed Issues 2023

Solution - Nonlinear

Corrected beam differential stiffness calculations for beam elements improving convergence and improving accuracy of results.

Better and more consistent convergence in some nonlinear shell models with offset bonded contact.

Solution - Linear Static

Corrected issue where CONTACTGENERATE would use a larger Maximum Activation Distance than was specified.

Corrected an issue computing thermal loads on composite CQUAD8 elements whose ply layup produced membrane-bending coupling.

Core Nastran

Corrected issue where models with very large bulk data files would fail to run.

Solution - Heat Transfer

Model convection loads more accurately by ignoring convection in contact areas not subject to free convection.

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