Most of the problem I was able to solve by converting the model to opensim4 (not the real problem) but enabling a collision in the thorax. Looks like by not having that collison it was making it easier to get in strange position that caused the simulation to freeze. The latest version i did is attac...

I'm studying opensim for a while and I was able to create a model where I'm trying to use theleast amount of muscles to be able to optimize using Scone. But for now I'm trying to use Opensim as a rigdbody simulation tool, like a ragdoll. The problem is, when I run the simulation with a ball hitting ...