某型双体船在水下非接触爆炸中的动态响应特性分析

Analysis on Dynamic Response of Catamaran Structure Under Non-Contact Underwater Explosion

采用大型有限元软件ABAQUS,对某型双体船全船结构在大当量水中兵器爆炸冲击作用下的动态响应进行数值模拟;计算采用声-固结构耦合方法,考虑了兵器水中爆炸空化压力影响和材料的应变率强化效应;通过优化双体船全船结构,降低船体底部等强冲击部位的塑性变形,使某型双体船全船结构满足大当量水中兵器爆炸冲击测量需要。

We established the finite element model of a type of catamaran,and used the large finite element analysis software ABAQUS to simulate the impulsion response of the catamaran structure subjected to loading. The fluid solid coupling method was adopted in calculating,and the influence of cavitation effects and material strain rate strengthen effect were considered. The plastic deformation of hull bottom was significantly reduced via the optimization of catamaran structure. The catamaran structure after optimization can satisfy the needs for measure large equivalent weapon explosion underwater.