抄録
This paper presents a FEM procedure for nonlinear magneto-striction materials, which take on a phenomenon that strain ε is a quadratic-like function of magnetic flux density B. In the procedure independent variables are mechanical displacement vector u and magnetic vector potential A, whose combination results in the variational formulation based on minimization of total potential energy. Modeling Helmholtz's free energy density having convexity is essential for accurate constitutive equations.
