静水压对加筋圆柱壳受水下爆炸冲击载荷作用的影响

The Influence of Hydrostatic Pressure on the Effects of Ring-stiffened Cylindrical Shells Subjected to Underwater Explosion

应用有限元法,分析静水压对受水下爆炸载荷时的加筋圆柱壳体的变形及破坏模式的影响。通过对壳体结构及外部水域进行建模,并考虑流固耦合及空泡因素,模拟出结构受水下爆炸载荷及静水压力联合作用下的响应。通过比较有和没有外部压力时,不同冲击波下结构的破坏形式,得出外部水压对耐压结构受爆炸载荷时响应的影响。

With finite element method, the influences caused by hydrostatic pressure to deformation and failure model of ring-stiffened cylindrical shells are analyzed. Considering cavitation and the coupling of solid and fluid, the structure responses caused by combination of underwater explosion and hydrostatic pressure are simulated through modeling shell structure and its outer water. By comparing failure modes of shell caused by UNDEX with and without outer hydrostatic pressure, their influences on loading effects are obtained.