Simulation Non-Convex Mesh Collider Problem

[onur-ulusoy]

Description

We are currently experiencing an issue with non-convex mesh colliders in our Unity simulation. Specifically, when we try to use a non-convex mesh collider for a hollow tube, we are encountering unexpected behavior where objects with Rigidbodies are falling through the collider. We have tried adjusting the mesh and adding temporary joints between components, but the issue persists.

Expected Behavior

Objects with Rigidbodies should collide with the non-convex mesh collider and interact with it appropriately.

Actual Behavior

Objects with Rigidbodies are falling through the non-convex mesh collider for the hollow tube.

Reason of the Problem

Unity physics motor does not support interacting non-convex mesh colliders with non-kinematic objects.

Steps to Reproduce

1. Create a hollow tube mesh with a non-convex mesh collider.
2. Add a Rigidbody component to an object.
3. Test the collision between the Rigidbody object and the non-convex mesh collider.

Additional Information

• We have tried adjusting the mesh to ensure it is closed and has no openings.
• We have tried adjusting the tube as having profile of arc so that its all surfaces are open