I want to simulate a bar with a cylindrical hole in its middle, rotating around its z axis taking into account the centrifugal forces. The mathematical solution of the problem is not a problem for me. Now I have to impose boundary conditions for the displacement u. I want to fix ur=0 and uz=0 on my inner cylinder (cylindrical hole). I know that there are dirichletx,y,z conditions but I can’t find a solution in cylindrical.
Thanks a lot!