Hey Weston, the anchor you set doesn’t do anything because it doesn’t share a location with the mesh.
The pipes your balloon is supposed to collide with are very thin compared to the mesh division. The mesh sphere needs to be refined for a good collision.
To prevent it from sliding out, you can add another object and keep the vertices out of that with a Solid Point collision goal.
I think the normal solver does a better job than the bouncy solver…
anchor inflation issue.gh (36.1 KB)
I played around some more and after cleaning up your curves we can also use the Solid Point collision goal instead of the custom goal. Not sure if this improves the overall speed of the simulation.
inflation_collision.gh (905.8 KB)