为了研究PETN爆炸产物的初始参数，以爆炸理论为依据，利用计算机数值模拟PETN装药密度与爆速的关系。采用软件编程的方法实现其爆炸产物初始参数的计算，并拟合得出爆炸产物初始参数与PETN装药密度的关系曲线和方程。用密度分别为1.56、1.65、1.69、1.74 g/cm³的PETN爆炸产物初始参数验证拟合方程的准确度。结果表明拟合方程具有较好的准确度。

In order to research the initial parameters of PETN explosion products, computer numerical simulation was used to fit the relationship of PETN charge density and detonation velocity which based on explosion theory. Calculation of initial parameters of explosion product was realized by computer programming, and fit curves and equations of the correlation between initial parameters of explosion products and the density of PETN charge were also obtained. Initial parameters of explosion products, which were produced by PETN with the density of 1.56、1.65、1.69 g/cm³ and 1.74 g/cm³ separately, were used to verify the accuracy of fitting equation. The results show that the fitting relationship equation has a very high accuracy.