General Mechanical

General Mechanical

moving constraints

    • sesana
      Subscriber

      is it possible to simulate a moving constraint? 


      I mean to apply a displacement instead of applying a force.
      Thanks


       

    • peteroznewman
      Subscriber

      Yes, you can apply a displacement instead of a force. If you are in Mechanical you must have seen Fixed Support.  Look for Displacement. Then you don't need to have any force in your model. You can see how much force it took to displace that face by selecting Force Reaction in the Results.


      If you have Large Deflection turned On under Analysis settings, think about the additional constraint you may introduce when changing from force to displacement. For example, if you have a simple cantilever modeled as a solid with a force at the end to bend the cantilever down, the end will deform downward, and it will also rotate a small amount. But check closely and you will see that the two corners had a slightly different downward deformation due to the rotation.  If you pick that same face and apply a displacement, the end will deform downward and rotate, but the displacement constraint will not allow the two corners to have a different downward deformation. This will give a slightly different result than the force.

    • sesana
      Subscriber

      thanks

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