Magnetoelastic behavior of ferromagnetic materials using stress dependent Preisach model based on continuum theory

Abstract

The magnetic and the mechanical constitutive equations are proposed on the basis of the continuum theory of magnetoelastic materials. The rate type expression is derived from the moving Preisach model by taking into account the stress dependence as the magnetic constitutive equation. From the symmetry of the constitutive equations, it is shown that the stress magnetization effect can be derived from the stress-dependent magnetization and magnetostriction curves. It is experimentally confirmed that the constitutive equations can describe typical magnetoelastic behaviors of a ferromagnetic material such as the magnetization and the magnetostriction curves under the stress and the stress magnetization curve.