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Frequency Simulation fails: "The solver has numerical difficulties"

Frequency Simulation fails: "The solver has numerical difficulties"

Frequency Simulation fails: "The solver has numerical difficulties"

(OP)
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:


(The solver has numerical difficulties. Inadequate fixtures or too large inplane loads or displacements. Specify a shift, or reduce load/displacement).

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.

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.

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