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Compute centrifugal force on a rotor
Posted Feb 22, 2023, 12:16 p.m. EST Electromagnetics, Studies & Solvers, Modeling Workflow Version 6.0 1 Reply
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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
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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