Ansys Learning Forum Forums Discuss Simulation Electronics Unexpected force relative to distance curve – Repelling magnets Reply To: Unexpected force relative to distance curve – Repelling magnets

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Ansys Employee

Dear @h.smeitink,

Which solver are you using for this case? I’m guessing Magnetostatic solver. This looks like a meshing issue. Since the forces are created due to magnetic fields in the airgap, the airgap should be sufficiently meshed as well. Not only the objects. On the analysis setup window > general tab, you can set a lower percent error (maybe 0.1 would be a good value). If this doesn’t resolve the issue, you can try to create vacuum objects between the main disc and the magnets and set mesh operations on them. We call these dummy objects and their purpose is to refine the mesh in specific areas we need dense mesh. I hope this helps!