摘要
为了获得JB-9014未反应炸药的Hugoniot关系,在火炮加载平台上利用反向撞击技术对JB-9014炸药进行一维平面冲击实验。将JB-9014炸药样品作为飞片安装于弹托前表面,将镀膜氟化锂窗口作为装置靶。利用火炮加速弹托,使炸药样品以一定速度撞击镀膜氟化锂窗口,通过光子多普勒测速仪(photonic Doppler velocimetry,PDV)测量炸药样品击靶速度以及炸药/镀膜氟化锂窗口界面粒子速度。最终根据冲击波阵面守恒关系计算获得了JB-9014炸药冲击Hugoniot数据,采用正交回归直线拟合得到了炸药样品在3.1～8.2 GPa压力范围内的冲击Hugoniot关系:D_s=2.417+2.140u_s (D_s和u_s的单位均为km/s)。结果表明:该方法测试精度较高,响应时间快(小于5 ns),同时该方法可以对炸药的反应情况进行检测,便于判断实验是否测得真实的未反应炸药冲击Hugoniot数据。
In order to obtain the Hugoniot relation of unreacted JB-9014 explosive, one-dimensional plane impact experiments of the JB-9014 explosive were completed on a gun by using the reverse-impact method. The JB-9014 explosive sample was mounted on the front surface of the sabot as a flyer. The LiF window was taken as a device target. The sabot was accelerated to a certain speed by the gun and then the explosive sample impacted the LiF window. The impact velocity of the flyer and the particle velocity at the sample/window interface were measured by a photonic Doppler velocimetry (PDV). The Hugoniot data was obtained according to the conservation of the shock. The Hugoniot relationship of the JB-9014 explosive sample within the pressure range of 3.1 8.2 GPa was established by using the least square method. The results show that reverse-impact method has the characteristics of high accuracy and fast response time (<5 ns). In addition, the reverse-impact method can be used to detect the reaction degree of the JB-9014 explosive, which can be applied to judge whether the real Hugoniot data of the unreacted explosive is measured in the experiment.
作者
裴红波
刘俊明
张旭
舒俊翔
黄文斌
郑贤旭
PEI Hongbo;LIU Junming;ZHANG Xu;SHU Junxiang;HUANG Wenbin;ZHENG Xianxu(Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621999, Sichuan, China;Graduate School of China Academy of Engineering Physics, Mianyang 621999, Sichuan, China)
出处
《爆炸与冲击》
EI
CAS
CSCD
北大核心
2019年第5期47-52,共6页
Explosion and Shock Waves
基金
国家自然科学基金委员会与中国工程物理研究院联合基金(U1630113)
国防技术基础项目(JSZL2015212C001)
