挠性炸药比冲量的数值模拟与实验研究  

Numerical Simulation and Experimental Studies on Impulse of Flexible Explosive

作　　者：林鹏[1] 王长利[1] 王等旺[1] 

机构地区：[1]西北核技术研究所,陕西西安710024

出　　处：《火炸药学报》2011年第4期30-33,48,共5页Chinese Journal of Explosives & Propellants

摘　　要：对不同厚度挠性炸药加载不同基底材料接触爆炸产生的冲量加载进行了一维数值模拟计算。采用自行研制的直线运动式冲量探头对一种0.4 mm厚度的挠性炸药接触爆炸产生的冲量载荷进行了测量,得出该厚度炸药的比冲量为1 234 Pa.s,数值模拟结果与实验结果符合较好。计算结果表明,挠性炸药的加载冲量与其厚度成比例增加关系;相同厚度的挠性炸药在不同波阻抗表面爆炸产生的冲量载荷不同,波阻抗越大,传入的冲量越大。One-dimensional numerical calculation is carried out to simulate the impulse produced by contact explosion of different thickness of flexible explosive （FEX） on several base materials. Experimental measurements were conducted to test the impulse of the FEX with thickness of 0.4 mm using self made impulse probe. The measured impulse is 1 234 Pa·s and agreed well with calculated results. The simulated results show that the impulse quantity of FEX increases proportionally to its thickness; the impulse quantities are sensitive to the shock wave impedance of contacted base materials, and the bigger of the shock wave impedance, the more imparted impulse.

关 键 词：爆炸力学 挠性炸药 比冲量 数值模拟 结构响应 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] O347[理学—固体力学]