Compute torque in electrical motors

Hey everyone,

Is there anyone here who simulates electrical motors using NGSolve? I’m looking to compute torque using the weighted stress tensor method. If you have a formula or any insights to share, I would really appreciate it!

I found a good description of the method from FEMM: Derivation of Weighted Stress Tensor:Finite Element Method Magnetics

implementing this in NGSolve (basically all described methods, using laplacian, cutoff,…) should be quite straightforward using the tutorial materials.

In principal solving laplacian equation with appropriate boundary conditions on air domain and integrating this weighted force field over the air domain.


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