Finite Element Analysis Based Coupling Models For the study of Mechanical Deformation in Electromagnetic Actuators

Abstract

The aim of this paper is to present a multiphysics coupling model for the study of mechanical deformation in electromagnetic actuator based on the 2D finite element method. Firstly, the transient strongly coupled of the electric circuit equation and magnetic field equation is considered for the finite element method. Then, the magnetic force density distribution is calculated by the Lorentz method based on the eddy current in transient operating conditions. Finally, using the magnetic force density as source term in the considered static mechanical equilibrium equation lead to compute the plate deformation. The nonlinear coupled magnetic field-circuit symmetrized algebraic equations system is solved by the Newton-Raphson method. The developed multi-physical Finite Element Method (FEM) tools are implemented under Matlab software.