CALCULATION OF MECHANICAL DEFORMATION OF MAGNETIC-MATERIALS IN ELECTROMAGNETIC DEVICES

A coupled model is developed to calculate mechanical deformation of ma gnetic materials in magnetic field. The two equations governing magnet ic and mechanical phenomena are solved simultaneously using finite ele ment method. The magnetic force distribution is calculated through a l ocal application of virtual work principle. The saturation of the mate rial is considered. The non-linear coupled system is solved by the New ton-Raphson method, the whole matrix is symmetrized. An example is giv en and shows the effectiveness of the model.