Model stops calculating when multiple materials are defined

That’s another reason why CalculiX should have better warning/error handling. Here, it simply failed (or even froze) without any feedback. There is a recent post about it, but it got flagged for some reason: Can’t make sense of CalculiX errors? I built an open-source tool to help diagnose them

Abaqus throws an error about missing section definition, but also warns about that elset:

***WARNING: The following entries for set P_060 are not found and are
removed: 0