爆轰产物JWL状态方程应用研究

Application Research on JWL Equation of State of Detonation Products

通过对凝聚态炸药爆轰产物JWL状态方程的研究,提出了一种确定JWL状态方程参数的γ拟合法,即利用γ律状态方程来拟合JWL状态方程参数。这种新方法不需进行圆筒试验,与现有方法比较,具有经济、安全、方便、准确的特点。利用这种方法拟合确定了4种常用炸药TNT、C-4、PETN、HMX的JWL状态方程参数,通过与圆筒试验法得出的JWL状态方程p-V曲线进行对比,证明γ拟合法具有较高的精度,完全可以满足计算爆炸力学的应用。

By investigating the JWL equation of state of detonation products of condensed explosive,we present a method to determine JWL parameters by γ fitting.This approach does not require cylinder test and is more economical,secure,convenient and accurate than existing methods.Using this method,four kinds of common explosive,e.g.,TNT,C-4,PETN and HMX have been studied.By comparing to the p-V curve of JWL equation of state given by cylinder test,we showed that the γ fitting has a high precision and meets the need of explosion mechanics application.