Hello, everyone

It is something about how to impose boundary condition.
The question is: Firstly, dof A is fixed by the penalty method. dof B is also needed to fixed. But dof B is imposed the periodic boundary condition  to dof A. I just want to know is it right in libMesh.

Another question: Are there any other method in libMesh to impose fixed boundary condition beside the penalty meshod?

Best Regards!