How can I use Twenty-node brick element in FEniCs environment?
Hi @mohamad1365,
I’m not at all an expert, but I know that this amazing project has a complete selection of finite elements that you can use for your codes. Try to check here.
Good luck 
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It looks like the twenty node brick element is the same as the S2 element on femtable (@androd, you are right that femtable is amazing).
In dolfinx, these elements are not yet implemented, although the Q spaces on hexahedra are. Depending on whether or not anything is missing in FIAT/FFCx, it might not be much work to get them working. I’ll have a look next time I have a programming day.
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