Title :
Nonlinear finite element modelling of magneto-mechanical phenomenon in giant magnetostrictive thin films
Author :
Body, Christophe ; Reyne, Gilbert ; Meunier, Gérard
Author_Institution :
CNRS, Univ. Joseph Fourier, Grenoble, France
fDate :
3/1/1997 12:00:00 AM
Abstract :
Magnetostrictive materials are characterized by a strong coupling between magnetic and mechanical phenomena. The modelling of magnetostrictive thin films using the finite element method is investigated, and two strong coupling formulations are proposed. They allow to take into account the material´s nonlinearity as well as the magneto mechanical coupling. The first one is using the H(B,σ) and σ(ε,H) characteristics in order to achieve the coupling, the second one directly uses the λ(H) curves and enables an experimental validation,
Keywords :
finite element analysis; magnetic thin films; magnetostriction; giant magnetostrictive thin films; magneto mechanical coupling; magnetostrictive actuators; magnetostrictive materials; nonlinear finite element modelling; Actuators; Couplings; Finite element methods; Interpolation; Magnetic analysis; Magnetic field induced strain; Magnetic materials; Magnetostriction; Stress; Transistors;
Journal_Title :
Magnetics, IEEE Transactions on
