舰船防护结构穿甲后爆炸的数值仿真分析  

Numerical analysis of ship defensive structure under explosions after penetration

作　　者：张婧[1] 施兴华[1] 盖京波[2] 王善[2] 

机构地区：[1]江苏科技大学船舶与海洋工程学院,江苏镇江212003 [2]哈尔滨工程大学建筑工程学院,哈尔滨150001

出　　处：《哈尔滨工业大学学报》2009年第8期202-206,共5页Journal of Harbin Institute of Technology

基　　金：国家自然科学基金资助项目(10276013)

摘　　要：为了研究冲击爆炸作用下舰船防护结构的破坏情况,将该结构简化为多层板架结构,借助于有限元程序LS-DYNA中的ALE算法,同时考虑穿甲和爆炸的作用,对其在穿甲后爆炸荷载作用下的非线性动态响应过程进行仿真分析,描述了钢板的破口形状、破口半径及板上单元等效应力随时间变化的情况,并与舷外接触爆炸对结构的破坏情况进行比较.结果表明穿甲后爆炸能对舰体内部造成破坏,因此它是一种比较理想的反舰攻击方式.The damage of ship defensive structure subjected to impact and ALE algorithm of LS-DYNA, the structure was reduced to the multi-layer explosion was studied adopting the grillage structure. Considering of explosion and penetration, numerical simulation was conducted on the nonlinear dynamic response process, in which the structure was subjected to explosions after penetration. The shape and radius of crevasse as well as the distribution of effective stress were described. Through comparing the results with those of the structure under contact explosion, it is revealed that the explosion after penetration can destroy the inner structure of ship. So it is a kind of perfect anti-ship attack.

关 键 词：舰船防护结构 穿甲后爆炸 接触爆炸 数值仿真 

分 类 号：U661[交通运输工程—船舶及航道工程]