I am doing a structural analysis on a welded frame which supports a 3500 pound x-ray enclosure. I first ran the simulation as a weldment part with the loads applied to the supporting beams. Now I have run it as an assembly to compare the results. The assembly has two parts: the frame weldment which is treated as beams and the box which has a weight of 3500 pounds. I have restrained the frame at four joints on the bottom beams. I have applied a bonded contact set between the supporting beams and the box. This does not allow the beams to flex, so it is not a representative model. From my reading, it appears I need a 'no penetration' contact set to allow the beams to flex. But this type of contact set does not seem to work with beams. When I select a beam face it tells me "Invalid entity on beam body was selected". So am I limited to 'bonded' contact set type?
Joints, Restraints, and Contact Sets:
Axial Stress Results: