JB-9014钝感炸药冲击Hugoniot关系测量

Measurement of Hugoniot Relation for JB-9014 Insensitive Explosive

采用火炮加载技术对JB-9014钝感炸药进行一维平面冲击实验。通过激光干涉测速仪测量冲击波到达炸药样品前、后表面的时刻以及炸药/镀膜氟化锂窗口界面粒子速度。利用冲击波到达炸药样品前、后表面的时刻差和炸药样品的厚度计算出冲击波在炸药样品中的传播速度,并结合炸药样品/氟化锂窗口接触面处粒子速度求出炸药样品冲击波后粒子速度,进而获得了炸药样品在3.1~9.7GPa压力范围内的冲击Hugoniot关系。对炸药样品中冲击波速度以及波后粒子速度进行不确定度分析,得到炸药样品中冲击波速度和波后粒子速度的合成标准不确定度约为0.54%和1.7%。将未反应炸药的冲击Hugoniot曲线和冲击波阵面的Rankine-Hugoniot关系进行联立得到冲击波后炸药样品内的压力和密度,进而拟合得到炸药样品在冲击绝热状态下沿(p,ρ)面的p-ρ曲线。

In this paper we measured the Hugoniot data for JB-9014 explosive by measuring the times when the shock wave reached the surfaces of the explosive sample and the particle velocity at the sample/window interface on a gun using PDV.Calculating the difference between the times when the shock wave reaches the front and the back surfaces of the sample explosive and its thickness,we figured out the propagation velocity of the shockwave in the sample,and found that the combined standard uncertainties of the shock velocity and the particle velocity were 0.54% and 1.7% within the pressure range of 3.1-9.7 GPa,through uncertainty analysis.Moreover,we also derived the relation between the pressure and the density of the JB-9014 explosive sample from the simultaneous equation of the Hugoniot relation and the Rankine-Hugoniot relationship of the shock wave form and obtained the fitted p-ρcurve in the sample along the（p,ρ）surface under heat-insulated shock.