how to animate a moving armlet on a caracter ?

[oops sorry… wrong forum :-/ ]

Hi,

I’ve some issue to find a way to animate an armlet attached to the left arm of an armatured character.
I’d like it moves a bit and collides with the forearm during the main animation.

I’d tried things with game engine and rigid body then ipo conversion, but I didn’t obtain stable things… tried also the pivot constraint, but I’m not sure how it works.

I’ve also tried with kind-of rigid softbody but it’s not really great.

below is a test with a bracelet and a collision object (aka the hidden forearm…). I tested with the Game Engine :