I see the mistake with the yield strenght (Pa for MPa) in the materials definition was not in my previous runs: Thanks for that!

Regarding the use of flexible/rigid behaviour for some parts when you donĀ“t really need them / care about their deformation I usually have conflicts: I tend to define them as rigid to avoid meshing them but then I usually run into limitations/restrictions like the kind of contacts, joints you can use with them... Are there any best practices or hints in this respect?