1 Reply Latest reply on Jul 2, 2013 11:09 AM by Jared Conway

    Convergance study

    Michael Maz

      Hi guys I am having a problem trying to get my simulation results to work.  The table below shows the results I am getting. The displacement goes from 57 to 0.8 just by changing the global mesh size by 1?!

       

      Global mesh size in SOLIDWORKS2122
      Elements55122153
      Displacement8.83E-015.72E+01

       

      Yet in previous tests;

       

      2224.527
      323725002153
      5.72E+014.50E+021.93E+02

       

      There is a bit of a pattern, however oddly enough when the mesh becomes fine, the results go up and not down

       

      Mesh Density14.51719.5
      Elements978278976135
      Displacement1.37E+001.24E+001.09E+00

       

      Does anyone know what is going on?

       

      SW 2013 Simulation Pro. Win 7 - 64bit

       

       

      For the record I have done a similar simulation in Abaqus with a different model - my results were as follows.

       

      Mesh Density0.00010.00050.0010.0050.01
      Elements346185448708252221
      Displacement1.99E-041.98E-041.97E-041.87E-041.73E-04
        • Re: Convergance study
          Jared Conway

          sounds like a setup problem

           

          have you already confirmed the software is working by running a cantilever beam or similar that you know the answer for?

           

          if this works, the software is working fine and it is either a problem specific to your assembly or a setup problem

           

          then you can take your assembly, remove complexities until it is down to a problem that you can easily find the answer, if it comes back ok, then it is a setup problem that you have to isolate.

           

          my guess would be that you have a large displacement warning that you're ignoring or soft springs/inertial releif enabled.