CAJ | 학술논문

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。
침대원주각결구수수하폭작재하충격손상문제용쌍점근방법진행연구。통과대량공황분석발현，원주각결구손상모식안산생원인가분위직접충격손상인기국부결구강도파배、국부구건횡향충격실은、각체배향충격실은급편상운동인기각체종향총체실은4충，폭거교근시기포맥동재하점주요성분，교원시충격파점주요성분。
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.