环肋圆柱壳体在水下冲击波作用下的动力弹塑性屈曲

DYNAMIC ELASTIC PLASTIC BUCKLING OF RING STIFFENED CYLINDRICAL SHELL SUBJECTED TO UNDERWATER EXPLOSION SHOCK WAVE

本文以加肋圆柱壳体为对象建立力学模型，在水下爆炸产生的冲击波作用下，考虑流体与结构的耦合效应，研究加肋圆柱壳体的弹塑性失稳变形量及动力响应特性。

In this paper, a ring stiffened cylindrical shell subjected to underwater explosion shock wave is considered. Introducing the fluid shell interaction caused by a transverse incident pulse in water, its characteristics of dynamic elastic plastic buckling is discussed. A theory is presented for determining critical loads for cylindrical shells subjected to large underwater explosions. The numerical results show that the final deformed shapes and pressure histories are similar to experimental results.