摘要
为了获得未反应JB-9014炸药的Grüneisen参数Γ,在火炮加载平台上对JB-9014炸药进行一维平面冲击实验。实验中,将炸药样品安装于两个铜板之间,两个PVDF压力计分别安装在炸药样品前表面和中部,记录两个位置处的压力随时间的变化历程;将圆形铜板作为飞片安装于弹托前表面,利用火炮加速弹托,使飞片以一定速度撞击样品装置前铜板,前铜板中产生右行冲击波对炸药样品形成一次压缩;随后冲击波在炸药样品/后铜板交界面发生反射,产生左行冲击波对炸药样品形成二次压缩。假设炸药样品的Grüneisen参数Γ为常数,计算不同Γ值下炸药样品前表面和中部压力随时间的变化历程,将不同Γ下的计算值与实验值进行对比,获得了JB-9014钝感炸药Grüneisen参数的最优值,为1.7。
In order to obtain the Grüneisen parameterΓof unreacted JB-9014 insensitive explosive,we carried out the one-dimensional plane impact experiment on JB-9014 explosive using a gun.In the experiment,the explosive sample was mounted between two copper plates,and two PVDF gauges were installed at the front and the middle of the explosive sample to record the variations of pressure versus time.The copper flyer was accelerated by a gun and then impacted the front copper plate at a certain speed.The right row shock wave was formed in the front copper plate,resulting in the first compression of the explosive sample and then reflected at the interface of the explosive sample and the rear copper plate,causing the second compression of the explosive sample.Supposing the Grüneisen parameter of the explosive sample was constant,we calculated the variations of pressure versus time at the front and the middle of the explosive sample with different Grüneisen parameters.Comparing these calculated values with the experimentally determined parameters enabled optimum values of the Grüneisen parameter to be identified.
作者
刘俊明
张旭
赵康
覃双
裴红波
张蓉
LIU Junming;ZHANG Xu;ZHAO Kang;QIN Shuang;PEI Hongbo;ZHANG Rong(The Graduate School of CAEP,Mianyang 621999,China;Institute of Fluid Physics,CAEP,Mianyang 621999,China)
出处
《高压物理学报》
EI
CAS
CSCD
北大核心
2018年第5期45-52,共8页
Chinese Journal of High Pressure Physics
基金
国防科工局技术基础科研项目(JSZL2016212C001)
科学挑战专题(TZ2018001)
作者简介
刘俊明(1990-),男,硕士研究生,主要从事炸药状态方程研究.E-mail:13521934162@163.com。;通信作者:张旭(1972-),男,博士,研究员,主要从事流体动力学研究.E-mail:caepzx@sohu.com。
