中文摘要：

为了解药包在距离结构较近时水下爆炸气泡对水中结构冲击的影响,假设圆柱壳结构附近气泡的位移为自由场中气泡由于浮力产生位移和圆柱壳对气泡吸引产生位移的和,并建立了简化射流模型,对射流冲击下圆柱壳板架所产生的毁伤效应进行研究,分析了破坏形式,拟为水下爆炸气泡射流对船体的毁伤提供参考。

英文摘要：

A simplified jet-flow model was proposed to understand the impact effects of underwater ex- plosion-induced gas bubbles on the structures near explosive charges. The simplified jet-flow model was based on the assumption that the displacement of the bubble around a cylindrical shell structure consisted of the buoyancy-induced displacement in a free field and the pull-induced displacement by the cylindrical shell structure. And the proposed model was used to investigate the damage effect of the cylindrical shell structure subjected to jet impact and the damage mode was analyzed. The results are helpful for the study on the damage of submarines impacted by underwater explosion-induced gas bub- bles.