RDX基PBX的做功能力及JWL状态方程参数确定

为研究RDX基PBX炸药的做功能力并确定其爆轰产物的JWL状态方程参数，对RDX基PBX炸药和TNT炸药进行?50 mm标准圆筒实验，获得了圆筒膨胀位移和速度的时程曲线，对比得出RDX基PBX炸药的做功能力明显高于TNT炸药；基于能量守恒对实验数据进行非线性拟合，得到2种炸药爆轰产物的JWL状态方程参数。TNT炸药的拟合参数和通过AUTODYN软件计算得到的结果符合较好；将采用上述方法得到的RDX基PBX炸药爆轰产物JWL状态方程参数用于数值模拟，计算结果与实验值吻合较好，符合数值模拟标定JWL状态方程参数的要求。

Power capability and parameters of JWL equation of state for RDX-based PBX

In order to study the power capability of RDX-based PBX and determine the parameters of the JWL equation of state, the ?50 mm standard cylinder test of RDX-based PBX and TNT were carried out, the expansion distance-time curve and velocity-time curve of the cylinder wall were obtained. Compared with the TNT, PBX had obviously a higher power capability. Based on the theory of energy conservation and the nonlinear fitting of the experimental data, the parameters of the JWL equation of state were obtained. Compared with the known software parameters and by numerical simulation of the cylinder test by AUTODYN, a fairly good agreement was reached between the experimental value and the actual test results, proving that this method for obtaining the JWL parameters is viable.