水下爆炸作用下单双层圆柱壳结构冲击损伤特性研究

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振动与冲击 ›› 2014, Vol. 33 ›› Issue (22) : 178-182.

论文

水下爆炸作用下单双层圆柱壳结构冲击损伤特性研究

刘云龙1，田昭丽2，张阿漫1

作者信息 +

Damage of cylindrical shell structure subject underwater explosion loading

Yunlong Liu1，ZhaoliTian2，Aman Zhang1

Author information +

文章历史 +

摘要

作为潜艇的典型结构形式，圆柱壳在水下爆炸载荷下的响应及损伤特性一直受到研究人员的关注。本文针对圆柱壳结构在水下爆炸载荷下的冲击损伤问题，采用双渐近方法对其进行了研究。通过大量的工况分析发现，圆柱壳结构在水下爆炸载荷下的损伤模式按照产生原因主要分为直接冲击损伤引起的局部结构强度破坏、局部构件横向冲击失稳、壳体的环向冲击失稳和鞭状运动引起的壳体纵向总体失稳四种，爆距较近时气泡脉动载荷占主要成分，较远时冲击波占主要成分。

Abstract

As the classic form of submarine, dynamic responses and damage characteristics of cylindrical shell structure has always been concerned by researchers. In this paper, the damage caused by underwater explosion load is studied through Double Asymptotic Approximations method. By plenty analysis of cases, we found that the damage mode could be classified by the cause, such as local strength failure caused by direct impact load, dynamic buckling of local components, circumferential buckling of shell structure, and axial buckling of shell structure caused by whipping responses. Besides, the shockwave and bubble pulsation load are the dominating factor for far and near underwater explosion case.

导出引用

刘云龙;田昭丽;张阿漫. 水下爆炸作用下单双层圆柱壳结构冲击损伤特性研究[J]. 振动与冲击, 2014, 33(22): 178-182

Yunlong Liu;ZhaoliTian;Aman Zhang. Damage of cylindrical shell structure subject underwater explosion loading[J]. Journal of Vibration and Shock, 2014, 33(22): 178-182