气泡射流载荷作用下圆柱壳动态响应  

Dynamic response of a cylindrical shell under bubble jet loading

作　　者：王诗平 郭君[1] 张忠宇[1] 陈海龙[1] 孙丰[1] 

机构地区：[1]哈尔滨工程大学船舶工程学院,黑龙江哈尔滨150001

出　　处：《爆炸与冲击》2013年第4期337-343,共7页Explosion and Shock Waves

基　　金：国家自然科学基金项目(11202057);高等学校博士学科点专项科研基金项目(20122304120034);中国博士后科学基金面上项目(2012M520709);黑龙江省政府博士后基金项目(LBH-Z12062)~~

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。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.

关 键 词：爆炸力学 动态响应 简化射流模型 圆柱壳 爆炸气泡 射流冲击 

分 类 号：O382.1[理学—流体力学]