钝感炸药散心爆轰驱动平板飞片研究

Research on Flyer Acceleration of Divergent Detonation of Insensitive Explosive

散心爆轰和滑移爆轰驱动规律研究可以获得钝感炸药的反应区和反应产物状态方程的信息。根据特定结构的大板试验研究TATB基钝感炸药和HMX基高聚物粘结炸药散心爆轰驱动平板飞片的运动规律,结合试验数据通过理论分析和数值计算,研究了爆轰产物的JWL状态方程参数。结果表明,随着测点半径的增加,飞层的有效药量则有所加大,表现为测点半径大的位置飞层终速更高;利用大板试验标定的爆轰产物的JWL状态方程参数可以较好地再现大板实验结果,也能较好地重现圆筒实验结果。因此标定炸药爆轰产物的状态方程时,对飞片初期运动最好采用激光速度干涉仪(VISAR)测试结果,对飞片中后期的运动可以同时采用VISAR和高速扫描结果。

It is helpful for understanding reaction zone and equation of state（EOS） of reactant to study divergent detonation and grazing detonation driving abilities.TATB based explosive and HMX based explosive were investigated with bigplate experiment and numerical simulation.Results show that for the larger radius of velocity interferometer system for any reflector（VISAR） probe,the higher final flyer velocity,implying more effective charge.Obtained JWL（Jones-Wilkins-Lee） parameters can reproduce the cylinder test results quite well.It can be concluded that VISAR method is effective for initial acceleration moment,and for the later movement period,both VISAR and smear photograph technique data can be used for the determination of detonation product EOS at cylinder test.