General Mechanical

General Mechanical

Need Help: FEA Problem. nonlinear contact between stent and cylinder balloon


      I want to simulate the inflation of stent graft by a cylinder balloon (circular truncated cone). I successfully ran the inflation by a uniform cylinder ballon.

      The displacement of this balloon is along its radial direction and it is made as a shell structure with 0.1mm thickness. 

      The contact settings:

      The results shows very unusual changes. The balloon go throuth the stent, and when the inner surface of balloon contact with out surface of stent, the stent was pulled and expanded.

      Anyone can help me to solve such problem?


    • peteroznewman

      "Adjust to Touch" is moving the contact surface in a way that is invisible to you. Turn it off and contact will be made where you expect it to be.

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