The Determination Of Critical Magnetic Field Of Magnetoelastic Buckling Of Cantilevered Ferromagnetic Plates With Finite Width In Transverse Magnetic Fleld

Based on the idea of magnetic strain, the model of magnetic strain was used to analysis the magnetoelastic buckling of cantilevered ferromagnetic plate in transverse magnetic field. The numerical results obtained from our new model showed that the theoretical predictions of critical values of buckling were in excellent agreement with experimental data, if the strain coefficient was between 17.53×10-5B-1 and 26.0× 10-5B-1. In this scope ,the bigger the coefficient was ,the smaller the critical value of buckling was. Furthermore, A comparison with Moon-Pao's model was made with the numerical method for qualitative and quantitative analysis. It was found that disparity with experimental data was caused because Moon and Pao didn't take magnetoelastic bending into account and they presumed the internal magnetic field was equal to the external one. The numerical analysis showed our model'scritical values of buckling fit the experimental data better than volume force coupling model's. After a great deal of calculations the tendency of the effect of width on critical values of buckling were found.