圆柱壳在水下爆炸载荷作用下的动力仿真分析

Dynamic Simulation of Cylinder Shell under Underwater Explosion Load

圆柱壳是船舶、潜艇和海洋工程结构物的重要组成部分,研究其在水下爆炸载荷作用下的响应对提高结构物的使用周期有着重要的作用。利用LS-DYNA动力有限元程序对张效慈等人做的深水爆炸水动压力场对潜体结构的动态响应试验进行数值模拟。分析了不同材料圆柱壳和不同参数复合材料圆柱壳在水下爆炸载荷作用下的抗冲击性。计算结果表明,复合材料比钢、铜、铝合金金属材料的抗冲击性好,弹性模量小的复合材料的抗冲击性好。方法可以简单快速的计算圆柱壳的抗冲击性,为舰船的设计提供参考。

Cylinder shell is an important component of ship and submarine and structure of ocean engineering. Studying its response to underwater explosion load is very important for increasing the lifecyele of structure. The experiment of dynamic effect of ship structure produced by underwater shock and explosion bubble has been numerically simulated with LS - DYNA. And dynamic responses of different material and different parameter composite cylinder shell to underwater explosion load are analyzed. The results show that composite has higher anti - impact capability than steel, copper and aluminum and composite with smaller elastic modulus has higher anti - impact capability. The anti - impact can be calculated simply and quickly with this method which provides some references for design of ship structure.