电磁脉冲加载法在圆柱壳塑性屈曲研究中的应用

Study on Dynamic Plastic Buckling of Cylindrical shells fromUniform Radial Impulse Using the Electromagnetic Loading

利用电磁脉冲加载法，进行了圆柱壳在径向脉冲载荷下的塑性动力屈曲实验，对脉冲磁场加载原理、电流测试方法、载荷计算及趋肤效应等问题进行了探讨。实验表明，电磁脉冲加载法具有载荷波形稳定、控制方便等特点，在加载的均匀性方面明显优于传统的爆炸加载法。

An experimental method is described which has been developed tostudy the dynamic plastic buckling of cylindrical shells from uniform electromagneticradial impulse. Based on the electrodynamics, an equation to calculateimpulse loading is derived. Skin-effect on the specimen is also discussed. Themethod of electromagnetic impulse loading, which can apply an excellent axisymmetricalradial impulse on the specimen shell and can easily control theamplitude of impulse, has some apparent advantages in contrast to the conventionalexplosive technique.