弹体斜侵彻混凝土过程中炸药的动态响应

Dynamic Response of Explosive Charge During Projectiles Oblique Penetrating into Concrete Targets

采用AUTODYN计算软件对弹体侵彻混凝土过程进行了数值模拟,分析了弹体内部不同位置处炸药的受力情况及炸药与壳体的相互作用;结果表明:斜侵彻时装药的前端和后端是两个受力较明显的区域;前端主要受压缩作用,炸药产生明显的塑性应变;后端装药受到拉伸和压缩作用,装药和壳体尾部之间发生强烈碰撞;斜侵彻过程中,装药前端的受力中心位于靠近靶板一侧的边缘处,而装药后端的受力中心仍然是端面中心;根据计算结果,侵彻弹药装药的防护不仅要从装药的前端面和后端面进行考虑,还要考虑装药的侧面。

The process of loaded projectile penetrated into namic code AUTODYN. It analyzed the pressure imposed the oblique targets was simulated using hydrody- on the explosive charge in different position and the interaction between the charge and the projectile shell. The results show that the fore and the tail of the charge are two areas enduring stress obviously. The force of the explosive charge mainly endures corn- pressed effect which induce to plastic damage effect inducing strongly shock effect on the tail , while the tail of that endures both compressed and tensile of the charge during penetration. Otherwise, the force bear- ing center of the fore charge close to one side edge of targets, but the tail locates the end-face center. Ac- cording to the investigation, the fore and the tail charge are not only protected in projectile used to penetra- tion, but also the side face of the explosive charge needs to be taken into account.