Hi,

Let me describe what Im trying to model:

     I have a round tube with a rubber ring inside of it.  I am trying to exert a force on the outside of the tube to in essecence crush the tube.   When I run my simulation I get excessive deformation for the force being applied and the rubber ring remains intact and has not deformed at all.   I've tried many different mate configurations but nothing seems to work.  I also would like to add a snap ring in the end of the tube that will pull together as the tube crushes around it. 

Any help would be appreciated. 

Thanks