The problem of perforated surface analysis

Hi anna

I wanna analyze perforated surface,But the displacement obtained is too different from the finite element.and the stress values are closer.Could you please help analyze the reason for the difference?

Thank you very much. (39.0 KB)

hard to tell. Could be a unit thing. The z-displacement is similar to your plot. In general, there should be more refinement around trimmed holes. So either you increase the whole refinement or you cut out the part with the hole and refine only this part. Or you generate the geometry with untrimmed patches.