圆柱壳结构水下爆炸所致鞭状运动特性研究  

Whipping response of a cylindrical shell structure subjected to underwater explosion

作　　者：刘云龙[1] 张阿漫[1] 葛亮[1] 汪玉[2] 

机构地区：[1]哈尔滨工程大学船舶工程学院 [2]中国人民解放军92857部队

出　　处：《振动与冲击》2013年第22期106-112,共7页Journal of Vibration and Shock

基　　金：国家自然科学基金(50939002;51222904);国家安全重大基础研究项目子专题(613157020102)

摘　　要：针对水下爆炸产生的周期性气泡脉动载荷诱导潜艇等细长体结构鞭状运动危及总强度问题,对鞭状运动特性进行研究。采用Morison相对速度模型与船体梁显式积分法,建立圆柱壳结构水下爆炸载荷的鞭状运动工程计算模型,并用试验结果对模型进行验证;通过对水下爆炸诱导的鞭状运动时、频域特性分析,获得爆点水深、轴向偏移、爆距等工况参数对其影响规律,可为潜艇抗冲击设计、研究提供参考。Bubble pulsation loads caused by underwater explosion may induce whipping response of slender structures, and even threaten their overall strength. As the c]assic structure form of a submarine, studying the whipping response of a cylindrical shell strueture is re1T significant. Here, Morrison relative velocity model and hull beam model were combined together to establish a numerical computing model for whipping response of a cylindrical shell structure and both two models were validated by comparing the computing resuhs with test ones. Then, the time-domain and frequency- domain characteristics for whipping response of a cylindrical shell structure were analyzed to obtain the effects of various state parameters, such as, charge depth, axial bias, explosion distance and so on on the characteristics. The results offered a reference for designing and studying submarine＇s shock resistance.

关 键 词：鞭状运动 水下爆炸 圆柱壳 潜艇 

分 类 号：O347[理学—固体力学]