1 Reply Latest reply on Mar 22, 2010 2:35 PM by 1-E9V5A2

    STAR.EXE fail in CosmosWorks 2008

      Hi everyone

       

      I am using SolidWorks2008 Educational Version with CosmosWorks 2008.

      The software is running on a machine with Windows XP and 10 GB RAM.

       

      I have to run frequency studies (to find ressonant frequencies) on CosmosWorks 2008 for an assembly with around 140 parts. It sucessfully finishes the mesh and prepares the study but then an error on STAR.EXE appear when it starts to run. The study has 1668227 Nodes, 900934 Elements and 5004678 DOF.

       

      This error only happens with this particular assembly but its running perfectly with other assemblies (smaller ones) and very quickly, indeed.

      Any idea on what can be wrong?

       

      Thanks, Jose

        • Re: STAR.EXE fail in CosmosWorks 2008

          Hello Jose,

           

          Here's an idea.  It could be that one or more of your components are not properly constrained.  Have you tried using the same fixtures in a static study? This may help you to find out which component(s) are not constrained (assuming that to be the cause of the error).  Turn on gravity and run a static study to see if static equilibrium is achieved.  If not, apply a fixed restraint to one vertex on each part and that will show you which part is not constrained properly.  Then, apply bonded contact, or adjust mates, or otherwise fix it up so that it works.

           

          Other than that, 5 million dof seems pretty huge.  It may be that Cosmos cannot handle a problem that big.  Is there any way you can sub-divide the problem to make it smaller? 

           

          Okay, that's two ideas.  Good luck!

           

          David Fletcher