12 Replies Latest reply on Jan 26, 2016 4:16 PM by Chris Clouser

    Frequency Simulation fails: "The solver has numerical difficulties"

    Val Blant

      Hello,

       

      I am very new to SolidWorks and I am having trouble running a Frequency Simulation on a very simple structure.

       

      I have 3 Structural Member tubes joined together, with a couple of gussets in the corners. Tubes are modelled as Beams, gussets are Solids. I've created Contact Sets to bond the gussets to the beams.

       

      I have simplified the model further by removing one of the gussets.

       

      When I run the simulation, I get this error:

      Failed Frequency Simulation.png

       

      If I make a Static Simulation and copy my Contact Sets there, the Static Simulation works as expected - nothing is loose. If I remove the gussets the Frequency Simulation starts working. If I remove Gravity from Loads, the model solves with the gusset in place. If I add any other forces to the simulation I get an error, so it only solves when there are no forces at all. Does this provide any hints as to what might be wrong?

       

      I am not sure why this is happening, or what I can try to fix it.

       

      I am attaching my part.  Any help would be appreciated.