Hi
Look at this differently, and start with the correct and appropriate model approach.
The 3D approach is not reomended here as it will reguire a very fine mesh to capture the response of such a frame structure.
Structural engineers would model this type of frame structure with beam elements, and in that way also stress singularities are avoided. See how to use beam and shell elements in Ansys below:
https://www.youtube.com/watch?v=hb7BUcug8wY&t=478s
All the best
Erik
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