In the Stress analysis of motion dialog, you have the option of selecting the object to study and the mesh size. When I try to run the simulation I get an error saying that there are no fixed geometries or loads. The motion simulation works with contact elements and the fixed components from the assembly but I don't know how to pull this across to the stress analysis study.
Happy to provide more info or pics if it will help.
Hoping that there is an easy solution to this.