2 种方式装药弹丸侵彻混凝土的安全性仿真

为获得弹丸炸药装药动态响应规律,以某型号舰炮为原型,利用LS-DYNA进行原比例建模.构建圆柱形和圆台形2种装药方式的弹丸模型,对其侵彻混凝土靶板过程进行仿真,获得炸药装药应力曲线及炸药爆轰后的压力曲线.结果表明:圆柱形装药弹丸未完全穿透靶板,发生早炸;圆台形装药弹丸完全穿透靶板,未发生爆轰;圆台形装药方式可有效减小侵彻时装药与弹壳相互碰撞的机率,提高侵彻安全性.

Safety Simulation of 2 Kinds of Charge Projectile Penetrating Concrete

In order to obtain the dynamic response law of projectile explosive charge, a certain type of naval gun is taken as the prototype, and the original scale modeling is established by LS-DYNA. The process of penetration into concrete target plate was simulated by building 2 kinds of projectile models of cylindrical and truncated cone-shaped charging modes, and the stress curve of explosive charge and the pressure curve of explosive detonation were obtained. The results show that the cylindrical charge projectile does not penetrate the target completely and early burst occurs. The truncated cone-shaped projectile completely penetrated the target plate without detonation. The simulation results show that the truncated cone-shaped charge can effectively reduce the collision probability between the charge and the shell, and improve the penetration safety.