矩形铁磁板的磁弹性弯曲与稳定性

Magnetoelastic Bending and Stability of Soft Ferromagnetic Rectangular Plates

本文对于在外加磁场中的矩形软铁磁弹性板的磁弹性弯曲现象进行了定量模拟；建立了能反映磁弹性相互耦合作用的数值计算程序；揭示了铁磁板弯曲变形与磁（场）力的非线性特征关系，并据此讨论了磁弹性失稳临界磁场随倾斜角变化的规律·

n this paper, the phenomenon of magnetoelastic bending is theoretically simulated for soft ferromagnetic rectangular thin plates in applied magnetic fields. A numerical program of 3d FEM is established to capture the nonlinear coupling interaction between magnetic fields and bending deformation. After the nonlinear characteristic of the bending deflection and the magnetic(field) force is quantitatively displayed, we discuss the critical magnetic field and the effect of the incident angle of obliquely applied magnetic field on the critical field to the phenomenon of magnetoelastic instability.