Pipe keeping shape after impact deformation.

[d4rk3lf]

If you're using PhysX bind, there's an option exactly for that.
Under breaking rollout, there's a deforming option that is off by default.

Turn it on, and when the bending happen, it will stay bended, and will not try to get back to initial position.
Very useful for car crash sims, or similar bending metal sims.