Method for acquisition of orthotropic material parameters and calculation of modal frequencies in permanent magnet synchronous motor

This article presents a novel method for fastly obtaining orthotropic material parameters in permanent magnet synchronous motor. First, theoretical model of the equivalent single cylindrical shell is introduced with three by considering characteristics Then, relationship and axial mode order m, radial n modal frequency f established. On this basis, an analytical m = 0 proposed to acquire values, its adaptability pointed out. Meanwhile, based on above obtained parameters, calculation frequencies presented. Finally, test finite-element are implemented verify rationality method.