聚能射流引爆屏蔽B炸药的数值模拟及试验  

Numerical Simulation and Experimental Investigation of Initiation of Shielded Composition B Impacted by Shaped Charge Jet

作　　者：王利侠[1] 周涛[1] 贺海民[1] 周玲[2] 

机构地区：[1]西安近代化学研究所,陕西西安710065 [2]中国兵器科学研究院,北京100089

出　　处：《爆破器材》2015年第5期56-60,共5页Explosive Materials

摘　　要：为研究？30 mm装药的聚能射流对屏蔽B炸药的冲击起爆问题,采用非线性有限元LS-DYNA程序数值模拟了聚能射流形成、侵彻及冲击引爆屏蔽B炸药作用过程,得到了射流穿过50~75 mm不同厚度屏蔽钢板的速度、直径以及侵入炸药界面的射流能量值,得到引爆B炸药的临界屏蔽板厚度,计算获得该聚能射流临界起爆速度。最后通过试验对数值计算的B炸药起爆特性进行了验证,试验结果与计算符合较好。研究证明,？30 mm装药的聚能射流对屏蔽B炸药的临界引爆屏蔽板厚度为70 mm,可用于反导战斗部毁伤目标。To study the property of shielded composition B initiated by a Q30mm shaped charge jet, the numerical simulation for the process of shaped charge jet formation, penetrating and shock initiating the shielded composition B was studied by means of nonlinear finite element analysis software LS-DYNA. The parameters, such as jet velocity, diameter and impact energy through the different shield steel plates in the thickness of 50-75mm were obtained. Also, the eritical initiation thickness of shaped charge jet to shielded composition B was obtained, and the critical velocity of jet impacting initiation shielded composition B was calculated. These calculation results were examined by a series of tests. It concludes that the calculation results are in agreement with the experimental ones, and the critical initiation thickness of shaped charge jet with a charge diameter of 30ram to shield composition B is 70ram, which could be applied to anti-missile warhead in the future.

关 键 词：爆炸力学 聚能射流 冲击起爆 屏蔽B炸药 数值模拟 

分 类 号：TK421[动力工程及工程热物理—动力机械及工程] TD235.21[矿业工程—矿井建设]