RDX基含铝炸药不同尺寸的圆筒试验及数值模拟

Different Diameter Cylinder Tests and Numerical Simulation of RDX based Aluminized Explosive

为了研究RDX基含铝炸药在不同装药直径下的做功能力,进行了Φ25.4 mm和Φ50.0 mm两种尺寸的圆筒试验。试验结果表明,爆轰产物相对比容均为10时,Φ50.0 mm比Φ25.4 mm圆筒的膨胀速度提高约4.73%。此外,基于Lee-Tarver点火增长模型,采用有限元动力学程序LS-DYNA对两种尺寸的圆筒试验进行了数值模拟,并与试验结果相比较,确定了该含铝炸药爆轰产物的Jones-Wilkins-Lee状态方程和反应速率方程参数。

In order to study the power of one RDX-based aluminized explosive with different charge diameter, the cylinder tests with diameters of 25.4 mm and 50.0 mm were conducted. The experimental results show that the expansion velocity of Φ50.0 mm cylinder is 4.73% higher than that of Φ25.4 mm when the relative volume of detonation product is 10. By using the dynamic finite element program LS-DYNA, two cylinder tests were simulated and the Lee-Tarver ignition and growth trinomial model was adopted. The parameters Jones-Wilkins-Lee equation of state and the reaction rate of the aluminized explosive were obtained through simulation and test results.