Abstract
The extended Jiles-Atherton s model considered stress dependence is applied to silicon steel sheets and compared with the published hysteresis curves of silicon steel. Magnetic properties of silicon steel, which are important for the precise motor simulation, are affected by compressive stress. The extended Jiles-Atherton s model is found to well describe the published magnetization curves of silicon steel for small compressive stress, though it is difficult to express the magnetization property with large compressive stress. Since the silicon steel sheet has coating material on the surface and has different deformation ratio from the coating material, the different stress distribution generates within the silicon steel. It is considered to be a cause to make the different magnetic characteristics between the bulk steel and tie silicon steel sheets.
