Applying a zero constraints to cell based on material_id

[blais...@gmail.com]

Dear all, I hope you are all doing fine :)!

I am trying to do some quick testing of something and this would require me applying a zero constraint to a set of cells which have a specific material id. I could surely do that from the weak form, but I was wondering if there was a way to do it strongly by applying a constraint like we do with boundary conditions (e.g. using VectorTools). I looked around in the documentation but I could not find anyway (but maybe I did not look carefully enough).

Thanks!

Bruno

[Daniel Arndt]

Bruno,

I don't think we have a function that would do that already. I would just loop over all (locally relevant) cells, and add the respective (locally relevant) dofs to the AffineConstraints object with add_line().

Best,

Daniel

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[blais...@gmail.com]

Elegant solution, I like it.

Thanks!