Research on Magnetic and Stress-induced Anisotropy of Silicon Steel Considering Magnetic Domain Deflection

In the process of reducing the vibration and noise of transformers and motors, the compressive stress of the clamp and the shell will cause magnetic and stress-induced anisotropy, and affect the magnetostrictive strain of the core materials. This paper proposed a free energy model of silicon steel based on the principle of minimizing magnetic domain energy. The model can simulate the deflection path of the magnetic domain under external magnetic field and stress by calculating the distribution of the energy extreme point. The basic magnetization curves of silicon steel materials under different stresses are simulated by the free energy model, which verifies the accuracy of the proposed silicon steel free energy model.