hello! I am studying the ''non linear_magnetostriction'' model in COMSOL. I'm confused about the meaning of "initial" in "initial magnetic susceptibility", whcih is a parameter of magnetostrictive material. Does it mean the magnetic susceptibility will change over time? But the study type is stationary, which means varibles do not change over time, so does initial magnetic susceptibility equal to magnetic susceptibility? thanks!
Regards Yi