Thanks Rob, and yes, my problem involves contact problem as well. A side question relates to smaller time step is that, when I use smaller time step (10^-4 vs. 10^-3), the system coupling becomes harder to converge, even the displacement and forces between source and target looks almost the same. On the other hand, sometimes pretty evident difference between source and target results in convergence. How do you usually avoid convergence issue? I have tried to increase iterations for system coupling and try to use similar mesh size for both FSI interface.
Sincerely,
Eric
You are navigating away from the AIS Discovery experience