I've encountered a serious bug - results from a multistep analysis (2 identical static steps without NLGEOM) involving shells and OP=NEW used for a boundary condition applied to translational and rotational DOFs (the latter seem to be the source of the problem since this issue doesn’t occur with solid elements) are wrong in the second step. Abaqus gives correct results for the same input file.
I've encountered a serious bug - results from a multistep analysis (2 identical static steps without NLGEOM) involving shells and OP=NEW used for a boundary condition applied to translational and rotational DOFs (the latter seem to be the source of the problem since this issue doesn’t occur with solid elements) are wrong in the second step. Abaqus gives correct results for the same input file.
Here's a forum discussion with an input file showing this bug: https://calculix.discourse.group/t/incorrect-results-in-a-multistep-analysis-with-shells-and-boundary-op-new/1352