Simulation failure: Singularity detected

[george_mcfarlane]

I am trying to run a simulation on some parts I have designed, I have worked through the meshing errors with the help of another user, but have come across Singularity errors when i try and solve the simulation. I have searched the forums and tried a few different things to see if it helps but it doesn't.

I have attached a snip of the errors, and have attached the whole error file and part file if somebody is able to have a look and give me some assistance?

Basically the parts are used as engine mounts on an engine block. I have removed all unneeded parts from the simulation using the simplify function.

Thanks for your help in advance.

George

"Error: SINGULARITY DETECTED AT GRID 898657 COMPONENT 1
Cause : A singularity has been detected in the stiffness matrix during decomposition.
Action : Investigate the degree of freedom at which the singularity occurred for a lack of
stiffness. Also, check your model for a lack of constraint."

[I_Forge_KC · Accepted solution]

You still have a bunch of those hidden components included in the simulation. That's why you get the warning in the solve check screen that tells you to check the DOF view for components that are underconstrained. There is also some interference between components, which would cause issues in the solver. They aren't relevant parts, so we can exclude them entirely.

If you head to the simplify environment and then remove all the hidden stuff, you're golden. Solved on the first try for me quite quickly.

[george_mcfarlane]

Thank you very much, that solved it!

I thought I had removed all the hidden components from the simulation, but that was another one that I was working on at the same time!