PBX-9501强爆轰产物状态方程的数值模拟

Simulation of overdriven shock states based on equation of state of PBX-9501 explosive

1.
National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900, Sichuan, China

摘要: 利用P.K.Tang的JWL强爆轰产物状态方程改造了DEFEL二维弹塑性流有限元源程序，并用改造后的DEFEL程序模拟了一系列飞片撞击PBX-9501炸药的一维强爆轰过程，给出了炸药驱动二级飞片(铝)的速度。计算得到的产物状态参数与实验测量结果符合较好，验证了增加修正项的新状态方程可较好地描述高能炸药的超压爆轰的高压流体动力学过程。
- 爆炸力学 /
- 产物状态方程 /
- 强爆轰 /
- 炸药
Abstract: A 2-D finite element code was adopted to compute several one-dimensional overdriven shock states of flyer plates impacting on PBX-9501 explosive with the JWL(Tang) equation of state. And the velocities of the flyer plates driven by the explosive were presented. The results of numerical simulation agree well with that of the experiment by Fritz J N, et al. The new equation of state with correction and the adapted code are verified.
- mechanics of explosion /
- overdriven detonation /
- equation of state for product /
- explosive