Strange Deformation/Stress Location for Motor Mount
I have been trying to do a Static Structural and Topology Optimization simulations for a motor mount I am designing. However, there is a concentration of stress in a place that doesn't make sense to me. The load is a bearing load in the +z direction. There are two "dummy" bolts that connect some of the parts. Both ends (left and right) are fixed supports. I assumed the stress would be primarily concentrated in the middle bottom and at the ends near the supports. Is this simulation correct or do I have something set up incorrectly? Thank you for any insight.
I have been working on the student version of Ansys 2020 R2