Friction model for contact

[abqlalala]

Hello everyone,

I would like to ask if there is any way of applying friction-based constraint for the tangential interaction during contact simulation. The examples I saw from the repo are all with frictionless model and it seems the Coulomb friction model is not supported by the develop branch of Tribol (https://github.com/LLNL/Tribol). Here are my questions:

1. Is there another feature branch supporting the frictional contact model?
2. If not, is there a way to apply such friction-based tangential constraints using the existing capabilities of Tribol / mfem?

Thanks in advance for your help.

[abqlalala]

Another question I have is whether the contact modeling scheme supports tetrahedron mesh - Tribol seems to work with brick elements but I don't see any information regarding other element types.