Vellum XPB solver for Houdini is really fast. You can simulate any kind of effect. The cool thing is it is you can make any material interact with each other.
Today I am going to share with you the most common issue I face with vellum, Hopefully this will speed up your work
Collision Issue, Sharp and Sticky
Almost every time when the vellum collides with external objects.
1. Enable MultiplePass Solver
This happens when the vellum object collides with deforming geo and post-solve is set to 10. That would cause crazy stretching even if you increase the substep constraint iteration.
No Energy Loss
1. Disable Fallback to First Order
Just like above colliding with deforming geo. Causing vellum doesn't have energy loss. It keeps moving/jittering with crazy behavior. Even with geo wrangle in the solver to reduce the velocity magnitude the issue still exists. Disabling this boolean will fix the issue.
That's it I hope this is useful to you.