摘要
针对圆柱壳结构受水下爆炸载荷冲击损伤问题用双渐近方法进行研究。通过大量工况分析发现,圆柱壳结构损伤模式按产生原因可分为直接冲击损伤引起局部结构强度破坏、局部构件横向冲击失稳、壳体环向冲击失稳及鞭状运动引起壳体纵向总体失稳4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。
As the classic configuration of submarine is like a cylindrical shell,the dynamic responses and damage characteristics of cylindrical shell structures have always been concerned by researchers.The damage caused by underwater explosion load was studied by using double asymptotic approximations method.The plenty analysis of cases, shows that the damage mode can 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 shock wave and bubble pulsation load are the dominating factors in far and near underwater explosion cases.
出处
《振动与冲击》
EI
CSCD
北大核心
2014年第22期178-182,共5页
Journal of Vibration and Shock
基金
国家安全重大基础研究项目子专题(613157)
教育部高等学校博士学科与专项科研基金(20122304110001)
国防基础科研计划(B2420133001)
关键词
圆柱壳
水下爆炸
冲击波
气泡
损伤模式
cylindrical shell structure
underwater explosion
shock wave
bubble pulsation load
damage form
