反舰导弹攻击舰船舷侧防护结构过程数值仿真

Numerical simulation of anti-ship missile attack warship broadside process

半穿甲内爆式反舰导弹战斗部对舰船的攻击过程中使用了穿甲效应、爆炸破片效应和爆炸冲击波效应.在研究舰船结构在这种战斗部攻击下的响应和破损时应考虑此3种效应的耦合作用,而目前在这方面只有单独考虑某一效应的研究.该文将一种基于FCT算法的高精度爆炸流体动力学程序与LS DYNA动力学有限元软件相连接,同时考虑了穿甲、爆炸破片和爆炸冲击波的耦合作用,对半穿甲内爆式反舰导弹攻击下舰船舷侧防护结构的响应与破损全过程进行了数值模拟仿真.结果表明该数值仿真方法行之有效.

A semi-armor-piercing anti-ship missile with HE fragmentation effect warhead is one of the most important anti-ship weapons. During the attack process, its warhead can trigger an armor-piercing effect, fragments effect, and explosion effect sequentially. Due to the coupling of these effects the target may be severely destroyed. Many studies have been made on the structure response and damage under armor-piercing effect, fragments effect, or explosion effect separately. However, few studies have paid attention to the coupling amplification effect of all three aspects. A numerical method is presented that can simulate the structure response and rupture under coupling amplification effect of fragment and shock wave. In a simulation, a high-resolution hydrocode based on the FCT algorithm was linked with the FEM software LS_ DYNA to achieve more accurate and efficient simulation.