Inverse Magnetostriction in Transient Analysis

HerzogHerzog GermanyMember


I am trying to make a transient magnetic simulation in 3D Maxwell using the inverse magnetostriction. My setup is a sensor, which makes use of the Villari-effect in a hollow shaft. Current and voltages are not DC and I want to apply a torque, so a transient analysis is nedded. Basically I want to model the decrease of the permeability of the material with increasing stress/torque values. If there is an easier way to simulate this in Maxwell, please let me know.
As long as I do not use the inverse magnetostriction material property, the simulation works fine, but the Villari-effect is of course neglected. When I change the shaft's properties to use inverse magnetostriction, the simulation throws the error "Process '3dtds' terminated abnormally. It may have run out of memory or could have been killed by the user." or the program closes itself, in both cases the simulation does not start and no results are obtained.

So the error suggests that my RAM is not sufficient, but I don't think that this is the case since the model is really simple.
Maybe I have made mistakes in the simulation setup. Is there stuff to consider when using inverse magnetostriction? Or maybe there are errors in the parameter values of the inverse magnetostriction. I tried linear, nonlinear and anisotropic with all sorts of values which seemed reasonable to me. An explenation on what the parameters really mean and how Maxwell uses them may be helpful. I read the articles in the Help section, but they didn't help much.

Thank you,

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