HNS基PBX炸药爆轰驱动平板实验及产物状态方程参数确定  

Experimental Investigation of Plate Driven by HNS-Based PBX Explosive and Equation of State Parameters Determination for Explosive Detonation Products

作　　者：李淑睿 张旭[1] 裴红波 莫建军[1] 傅华[1] LI Shurui;ZHANG Xu;PEI Hongbo;MO Jianjun;FU Hua(Institute of Fluid Physics,China Academy of Engineering Physics,Mianyang 621999,Sichuan,China)

机构地区：[1]中国工程物理研究院流体物理研究所,四川绵阳621999

出　　处：《高压物理学报》2023年第6期75-82,共8页Chinese Journal of High Pressure Physics

基　　金：冲击波物理与爆轰物理重点实验室基金(2022JCJQLB05706)。

摘　　要：为确定六硝基茋基PBX-1炸药产物的状态方程参数,采用平面波透镜加载和激光干涉测速技术,测量了在长度不同、直径为6 mm的PBX-1炸药药柱爆轰驱动下金属平板的自由面速度变化历程。实验结果表明:PBX-1炸药的爆轰波传播速度约为6798.2 m/s,且炸药的长径比对驱动平板的有效装药量有显著影响;与长径比为1的情况相比,长径比为2时PBX-1炸药驱动平板的有效装药量更小,导致金属平板的最大运动速度降低,但是在驱动平板过程中,金属平板受平面波透镜加载边界的影响较小。基于实验数据,开展了长径比为2的PBX-1炸药爆轰驱动平板的数值模拟,确定了PBX-1炸药爆轰产物的状态方程参数,计算得到的平板自由面速度变化历程与实验结果吻合较好。研究结果可为冲击片雷管的可靠性评估提供重要的基础参数。To determine the parameters of equation of state for detonation products of the HNS-based explosive PBX-1,the plane wave lens and the photonic Doppler velocimetry(PDV)were used to measure the free surface velocity histories of metal plates driven by the PBX-1 explosives.The explosive samples had diameters of 6 mm and different lengths.According to the experimental results,the detonation velocity of PBX-1 is about 6798.2 m/s,and the effective explosive volume is obviously affected by the ratio of length to diameter of explosive sample.Compared with the sample with the ratio equal to 1,the effective explosive volume of the sample with the ratio equal to 2,leads to a lower maximum plate velocity.The plate driven by the longer explosive sample is less affected by the initiation boundary of plane wave lens.Therefore,the experimental result obtained by the longer explosive sample was used to determine the detonation products’parameters of equation of state by numerical simulation.The simulation showed that the simulated free surface velocity history is in good agreement with the experimental result.The obtained detonation products’parameters of equation of state provides fundamental data for reliability assessment of slapper detonator.

关 键 词：六硝基茋 爆轰驱动平板 JWL状态方程 激光干涉测速 冲击片雷管 

分 类 号：O382[理学—流体力学]