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mesh movement and hysteresis Jiles-Atherton model
Posted 20.08.2019, 09:14 GMT-4 Low-Frequency Electromagnetics 2 Replies
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Hi in case of mesh movement, the hysteresis model does not work and error occurs. I was wondering if there is solution for it?
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Dear Nina,
What kind of moving mesh are you referring to? It should work for rigid body motion, setting the "Material type" in Ampère's Law to "Solid". It has not been implemented for freely deforming domains as it is not clear how the magnetization should transform in that case. In general, freely deforming solids with any kind of "polarization" are problematic as there is no "a priori correct way" for such a material to behave. You can compare to magnetostriction which is an established such material model - but not all materials are magnetostrictive.
-------------------Magnus
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Dear Magnus I mean the rotation of the rotor with respect to the stator of the electrical machines. as the rotor rotates, the geometry of the machine varies. so, mesh movement must be employed. I was wondering if the rotor and stator areas are meshed, and the air-gap between them is considered as boundary element (in which only the boundary is meshed), then the J-A hysteresis model works? Best regards Nina