基于KHT程序的RDX基含铝炸药JWL状态方程参数预测研究

为预测炸药的JWL状态方程参数,根据KHT状态方程编制了KHT程序,计算得到的RDX基含铝炸药的爆轰参数与实验值具有良好的一致性,证明了KHT程序的可信性.在此基础上,利用KHT程序计算的爆轰产物等熵膨胀数据,对RDX基含铝炸药的JWL状态方程参数进行了预测.将预测的JWL状态方程参数输入到AUTODYN软件中,对1 kg RDX基含铝炸药水下4.7 m爆炸试验进行了数值模拟仿真,对比了不同爆距处冲击波压力峰值的试验值与仿真值,两者符合较好. 研究结果表明,利用KHT程序计算的等熵膨胀数据对JWL状态方程参数进行预测是可行的,预测的参数是可用的. 

JWL Equation of State Parameters Prediction of RDX-Based Aluminized Explosive Based on KHT Code

To predict JWL (Jones-Wilkins-Lee) equation of state (EOS) parameters, a KHT Code has been programmed according to the KHT(Kihara-Hikita-Tanaka) EOS of detonation production. The detonation parameters of RDX-based aluminized explosives calculated by KHT code have a good consistency with the experimental values, which proves the credibility of the KHT code. On this basis, the calculated isentropic expansion data of the detonation production using KHT code were used to predict the JWL EOS parameters for RDX-based aluminized explosives. The numerical test by employing AUTODYN software with the predicted JWL EOS parameters as input data was carried out to simulate the explosion of 1 kg RDX-based aluminized explosives under water 4.7 m. It was found that the shock wave peak pressures of numerical calculation were very similar to the experimental results. The results indicate that the proposed prediction method using KHT Code is reliable and available.