I am and have been trying to do a specific simulation for the last several weeks. It seems like I take one step forward two steps back. See below: See the attached files. I'm on Ansys Workbench 13. www.plastics-consulting.com/rod.stp[/URL] [PLAIN]www.plastics-consulting.com/tube.stp[/URL] All I want to do is treat the tube as completely rigid, inside and out. I force the rod down through the tube and see where it comes in contact with the tube ID. You can flush out the top of the rod and the top of the tube section. Essentially the rod should be constrained to the ID of the tube section. That’s it. The tube should stay rigid, the rod will deflect in order to fit down the curved tube profile. The rod cannot/will not penetrate the tube ID (frictionless). I want to see contact points and stresses. Looks like explicit dynamics is an option, or static structural. Both can be treated as steel. I’ve been jumping into Ansys left and right and been doing some very minor valve simulations. This simple concept for this project came up awhile ago. I’ve asked many different people – coworkers, college professors, etc, and no one has been able to point me in the right direction. Is this over the top difficult?