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Ansys Mechanical Help with static structural setup error

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Old   November 5, 2023, 05:34
Default Ansys Mechanical Help with static structural setup error
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ramin
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Hello everyone,

I am trying to perform a finite element method (FEM) simulation of von Mises stress for a rotor of a permanent magnet synchronous motor (PMSM) in Ansys Mechanical. I have completed the static structural setup, but I am encountering the following error:

"Not enough constraints appear to be applied to prevent rigid body motion. This may lead to solution warnings or errors. Check results carefully." I also deleted the automatic connection, inserted the connection group as a joint, and then created a new automatic connection. However, the error did not go away.

I have attached some pictures of my setup details for your reference. Any help would be greatly appreciated. https://drive.google.com/drive/folde...do0OqyEBa-KaLx

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Old   May 14, 2024, 09:34
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Erik
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You did not constrain or define all 6 Degrees of freedom. Looks like your model is not constrained in the Z (axial) direction, which would allow to rigid body motion.
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Old   May 23, 2024, 00:41
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Nick
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Hello,

One thing I've discovered while struggling with Ansys: sometimes, a little detail like a misapplied constraint can screw things up. Pro tip: send an email to Ansys technical support with a detailed description of your problem. They're super responsive and can often spot what's going wrong.

Last edited by NickS; June 7, 2024 at 04:13.
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Old   June 14, 2024, 04:27
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Marcin
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try to glue most parts where are bonded connections and review Ur BC's . Your rotor want to fly to the cosmic ethernal You have not enough suppoorts on Ur model
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Old   June 22, 2024, 15:00
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Try to pass these tips in the link below
https://howtooansys.blogspot.com/202...ot-enough.html
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ansys mechanical, ansys workbench, maxwell, static structural, von-mises stress

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