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[Nicco]

Dear Ansys Community,

I have been having issues with my mechanical solver.

I am running a multiphysics analysis in which a 2D electromagnetic model is linked to an harmonics response + modal analysis model.

For the past few days, the mechanical solver has been taking hours to extract the modes of the structure, which used to only take a few minutes. Opening the task manager, I see the following: 

Please let me know if there is any setting I can change to speed up the process, or any other way to fix this.

Thank you in advance,

Niccolo'

 

[Aniket]

Are you saying using same model and same settings you get this difference?

Go to tools solver process settings, depending on the version you are using you can either use 2 or 4 cores for parallel processing (note these must be physical cores, logical cores do not count)

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[Nicco]

The file is a different one, but the model is pretty much the same; and anyway the differences in the file would not justify how much longer it takes the solver.

I did not modify any of the settings on purpose, so unless I did it accidentally and I have not yet realized, they should be the same.

I am already using 4 cores.

 

Thank you,

Niccolo'

[Aniket]

Please compare the solver output for both the files, in tools such as notepad++ or kdiff.

It is quite possible that your before changes your model was just within the limits to solve on direct solver and with changes it has shifted to the iterative solver which is slower compared to the direct solver.