17 Replies Latest reply on May 17, 2013 7:49 PM by Jared Conway

    Displacement between parts in contact study while coefficient of friction is sufficient

    Pieter Bartlema

      I would like to receive some feedback on the following subject. How handles solidworks contact sets including friction ?

       

      We are analysing a engine bracket in contact with the engine rail. (non-linear contact study), it seems that there is displacement between the contact faces  that I would not expect based on the coefficient of friction and normal force. This has major influence on the loading path.

       

      Bracket Half.JPG

       

      I made a very simple model to see how SW handles contact including friction:

       

      *2 blocks.

      *fix displacement on bottom face.

      *-100 kN vertical force applies at solution time 0 to 0.1, 0.1 to 1 kept constant

      * 15 kN traverse load linear increasing from solution time 0.1 tot 1

      * Surface to surface contact set, coefficient of friction 0.15.

      Displacement X.JPG

      Contact force.jpg

       

      I am confused to see a jump in displacement(see image) between the contact faces while the coefficient of friction is not exceeded(see result force image).

       

      Your Feedback is highly appreciated.