Reply To: AlNiCo hysteresis simulation

[pavel.kirienko]

Here is the additional information on what I get in the first case, where I replace the BH curve of the LNG37 material from the standard library with the core loss model. The magnetization at the end of the current pulse and then at the end of the simulation (some time after the pulse is completed) is shown below.

While in this case I can successfully simulate magnetization, the core loss model has two limitations that are fatal in my case:

• It does not seem to be possible to define the initial magnetization, or I don't understand yet how to do that. A screenshot of the material configuration is shown below; I expect it to be magnetized along the Z axis, but it only works with the original BH curve, not the core loss model.

• The magnetization results in flux closures (loops), as seen on the second image above. I understand this is caused by the fact that the core loss model does not support anisotropy at all. From the docs:

magnetization is always considered as isotropic magnetization, that is, magnetization direction is determined by the orientation of the computed field

Unless there is a way to address these two limitations, I should be using the regular BH curve, but then I need to understand how to simulate both demagnetization and magnetization.