聚能射流前驱波起爆靶板屏蔽炸药的数值模拟  

NUMERICAL SIMULATION OF THE TARGET BOARD DETONATED BY PRECURSOR WAVE OF SHAPED CHARGE JET TO SHIELD EXPLOSIVE

作　　者：张俊坤[1] 高欣宝[1,2] 许兴春[1] 郭江[3] 

机构地区：[1]军械工程学院弹药保障与安全性评估军队重点实验室,石家庄050003 [2]军械工程学院弹药工程系,石家庄050003 [3]西安卫星测控中心,西安710043

出　　处：《工程爆破》2014年第6期7-10,共4页Engineering Blasting

摘　　要：为系统地研究聚能射流前驱波对靶板屏蔽炸药冲击起爆的影响,从前驱波的形成机理出发,结合前驱波在靶板中传递时能量的衰减、作用面积的增大和在靶板-炸药界面能量的转化,对炸药冲击起爆的窄脉冲准则进行改进,构建了聚能射流前驱波冲击起爆靶板屏蔽炸药的数学模型,并对模型进行了详细地分析和研究,得到如下结论:对于直径3mm的聚能射流,其前驱波最大可起爆约4.2mm钢板屏蔽的A4炸药,符合试验结论;前驱波起爆能力的降低主要是由于作用面积的增大和不同材料交界面的能量转化,说明可以通过靶板厚度与靶板层数之间的最优组合,以最小的代价达到最大的前驱波防护能力,为复合靶板的研究、野战弹药生存能力的提高和废旧弹药的处理提供了理论依据。In order to investigate shielded explosive detonated by precursor wave of shaped charge jet, the mathematics model of shielded explosive detonated by precursor wave was established. Formation mechanism of precursor wave, short pulse initiation criterion, energy and effect area of precursor wave changing with the thickness and target board/explosive interface were applied to establish the mathematics model. Then the material characteristics were used in the calculation and analysis of the mathematics model. The result showed that 4.2ram was the critical thickness of steel target preventing shield explosive detonated by precursor wave, while the jet diameter was 3mm,and it accorded with the conclusion of experimentations. The effect area of precursor wave changing with the thickness and target board/explosive interface were the main factors influencing the initiation ability of precursor wave. It showed that armor defense ability for precursor wave could be optimized by different combinations between the thickness and amount of target board. It could provide theoretical guidance for composite target research, improvement survivability of field ammunition and processing of waste ammunition.

关 键 词：聚能射流 前驱波 屏蔽炸药 冲击起爆 数值模拟 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术]