With3-D finite element analysis,accordin g to the equations among current-magnetic field-repulsion force,the contact bri dge model is introduced to simulate the current distribution between contacts,so the repulsion force can be calculated.

• 基于电流-磁场-电动斥力之间关系的方程,应用三维有限元分析,引入圆柱导电桥模型作为接触点模拟触头间的电流收缩,从而计算出作用在触头上的电动斥力。