飞片撞击下JO-9159炸药的脆性损伤

摘要

This paper describes the fracture damage of JO-9159 high explosive under the impact of flyer. Aluminum flyer is accelerated by the burning of black powder to impact studied samples. Four collide experiments for JO-9159 sample have been undertaken, and the broken sample fragments have been recovered, and sieve analysis has been used to obtain the fragments number distribution. According to this distribution and concerned document data, NAG model coefficient of JO-9159 has been initially determined. The subroutine of NAG model has been incorporated into one-dimensional program SSS. Calculation work has been done, and the results show that the biggest damage zone is corresponding to spallation thickness from the experiments.%介绍了高能炸药在飞片撞击下脆性损伤的实验和理论研究工作。采用了火药枪装置驱动铝飞片作为加载手段，对被研究样品JO-9159进行碰撞；回收了经受撞击破碎的样品，对其进行筛网分析获得破片数目分布；据此分布和有关文献数据，给出了JO-9159炸药的成核-增长(NAG)模型系数。将适用于脆性损伤模式的一维 NAG模型子程序加入一维流体弹塑性动力学计算编码，完成调试和初步数值模拟工作，计算所得的样品最大损伤区域与实验得到的层裂片厚度接近。