[Libmesh-users] Constraint matrix

[Renato P. <re...@gm...>]

Hi

I need to tie three dofs together. (u1 + C u2 + D u3=0). I read about the
constraint matrix in the list, but I did not find an example to follow. The
penalty method seems also a nice alternative.

Is there any example of either to suggest?

Thanks once again in advance.
Renato