Get the name of the rigid body that spawned a hit event?

I can’t seem to find a way to return the name of the bone on my Physics Asset that collided with something. I want to return the nameso that I can force it to stop simulating physics and stay ‘stuck’ to it’s impact point.

I’m trying to make a chain-flail weapon similar to Bulletstorms, which would stick to a surface once it hit it. I have the physics constraints all set up, but I want a bone to stop simulating physics and stay ‘stuck’ to it’s target when it hits something, that way all the other bones will be forced to ‘wrap’ around the object and stop simulating too.

Any ideas how I can go about this? Thanks.