,nThank you for your helpful tutorial on the simulation of hyperelastic materials. I am trying to run a simulation of the compression of a circular silicone rubber band made out of RTV615 constrained by two shafts, but I've been struggling to make the simulation to converge. I've followed your tips but the simulation still fails at less than 20% of the way. The rubber band is not symmetric so I believe I cannot interpret this problem as a 2D problem. Do you have any suggestions on how to improve it?nRegards,nMoji nn