摘要
爆炸载荷作用下结构的破坏变形是非常复杂的非线性动态响应过程。借助于大型有限元分析软件LS-DYNA中的ALE算法对舰船板壳结构在两发武器攻击下的动态响应进行模拟,分别分析了炸药之间距离不同的三种模型在两发武器同时命中和延时命中下的破坏情况,描述了钢板破口大小、有效应力最大值以及最大位移等动态参数。并对两种攻击方式进行了分析比较,结果表明两种攻击方式下,两发武器之间距离愈大,钢板的破坏越严重。
The damage of structure subjected to explosions is a very complex process with nonlinear character. Adopting the ALE algorithm of LS - DYNA, the numerical simulation of the dynamical response process of plate - shell structure subjected to two attacks was conducted. The deforming of three models where the distance of two dynamites was different subjected to two attacks simultaneously and successively was analyzed and the bulk of crevasse, the maximal effective stress and deformation were described. The two results were compared with each other. It was revealed that the longer the distance of two dynamites, the greater the destruction of the structure subjected to attacks simultaneously and successively.
出处
《计算机仿真》
CSCD
2008年第4期5-8,共4页
Computer Simulation
基金
国家自然科学基金委员会-中国工程物理研究院联合基金资助项目(10276013)
关键词
饭壳结构
动态响应
数值模拟
两发武器同时命中
两发武器先后命中
Plate - shell structure
Dynamical response
Numerical simulation
Two simultaneous attacks
Two successive attacks
