How to judge which result is good?

Using SimScale Solid Mechanics / FEA
3

Hi @hangchang0001 ,
I assume this project is the correct one? SimScale

For a thin structure like this in bending you would need a 2nd order mesh to get correct results.
With that you should see pretty quickly a mesh-independent result.

See also here: When should I use a second order mesh?
and the linked project examples.

Best,
Richard

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