3 Replies Latest reply on Dec 3, 2010 2:26 PM by Anthony Botting

    Non-Linear, Permanent Displacement Results

    James Benting
    James Benting Dec 2, 2010 7:50 AM

      Hello,

       

      Have recently started using non-linear simulation - i have set the new material properties for young's modulus e.t.c,

       

      I set a time curve before starting the simulation but am struggling to find the permanent displacement results/ displacement when the load is removed???

       

      Any help?

       

      Thanks,

       

      James.

        • Re: Non-Linear, Permanent Displacement Results
          Anthony Botting
          Anthony Botting Dec 2, 2010 7:19 PM (in response to James Benting)

          As long as you have a stress-strain curve that represents some permanent-set when the structure is unloaded (plasticity-von Mises or Tresca), it only sounds like you need to add the "unloading" portion of the time curve. Typically you can ramp-down the load to zero on the same curve as for ramping-up the load. Then you can plot the deformation at the end of the analysis when the load is at zero, and you should be able to observe a permanent-set (or residual strain) in the structure. Hope that helps.