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Compute centrifugal force on a rotor

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I'm currently working on the topology optimization of a rotor for a PM motor for a Formula Student race car. To perform the topology optimization, I would like to impose a constraint dealing with the strain and stress acting on the rotor for a certain working conditions (20 000 rpm). Do you have an idea how can I compute the maximum stress and stain on the topology to take into account centrifugal force?

Thank you very much.

Clayson Thomas


1 Reply Last Post 2023年3月16日 GMT-4 06:49
Philipp Buchsteiner COMSOL Employee

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Posted: 2 years ago 2023年3月16日 GMT-4 06:49

Dear Thomas Clayson,

to track the maximum of the stress and include this in the optimization you would need to set up the p norm, as shown in the resources below: https://www.comsol.de/blogs/equation-based-modeling-with-a-space-time-discretization/

https://www.comsol.de/model/topology-optimization-of-loaded-knee-structure-with-a-maximum-stress-constraint-75821

To include the centrifugal forces in your structural mechanics simulation you can add the volume force -> rotating frame to your rotor.

I hope that these information are helpful. Kind regards, Philipp Buchsteiner

Dear Thomas Clayson, to track the maximum of the stress and include this in the optimization you would need to set up the p norm, as shown in the resources below: https://www.comsol.de/blogs/equation-based-modeling-with-a-space-time-discretization/ https://www.comsol.de/model/topology-optimization-of-loaded-knee-structure-with-a-maximum-stress-constraint-75821 To include the centrifugal forces in your structural mechanics simulation you can add the volume force -> rotating frame to your rotor. I hope that these information are helpful. Kind regards, Philipp Buchsteiner

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