I see two issues with your simulations.
First, the two bodies have overlapping geometry, the star shaped body penetrates into the circular body. In your cad package you trim these parts so they touch but do not overlap. The end of each point should be trimmed to match the curvature of the circular part (one option).
For the type of analysis I think you want to perform a static analysis not a dynamic analysis. In a static analysis you can create a centrifugal load by providing an axis of rotation and a rotational velocity.
Please let me know if this helps or if you need any further assistance.