密闭空间内六硝基六氮杂异伍兹烷基复合炸药能量释放特性

为研究密闭空间内六硝基六氮杂异伍兹烷（CL-20）基复合炸药爆炸能量释放特性，实验测试了药氧比为0.35~1.00炸药样品内爆产生的准静态压力。基于理想气体绝热模型和铝粒子气化燃烧方程，计算分析了不同药氧比样品爆炸的能量释放过程，应用非线性有限元AUTODYN 软件模拟了不同药氧比炸药样品密闭空间内爆炸的作用过程。研究结果表明：随着药氧比的增加，复合炸药的准静态压力先升高后降低，在药氧比为0.83时准静态压力达到最大；复合炸药在20 ms内释放的能量随药氧比也呈现先升高后降低的趋势；密闭空间内炸药爆炸产生的准静态压力主要由一定时间内炸药实际释放的能量和能量释放的时间尺度共同决定；准静态压力的计算值与实验结果最大相对偏差为4.7%。研究成果可为先进温压战斗部用高能炸药配方设计与优化提供参考。

Energy Release Characteristics of CL-20-based Composite Explosives in Confined Space

The quasi-static pressure generated by the implosion of explosive samples with R_e of 0.35-1.0 was tested experimentally to study the explosion energy release characteristics of CL-20-based composite explosives in confined spaces. Based on the ideal gas adiabatic model and aluminum particle gasification combustion equation, the explosion energy release processes of explosive samples with different R_e were calculated and analyzed. The result shows that the quasi-static pressure of the composite explosive increases first and then decreases with the increase in R_e, and the quasi-static pressure reaches the maximum with R_e of 0.83. The energy released from the composite explosive in 20 ms also shows a trend of increasing first and then decreasing with the increase in R_e. The quasi-static pressure generated by the explosion of explosives in confined space are mainly determined by the actual energy released by the explosive and the time scale of energy release within a certain period of time. AUTODYN is used to simulate the action process of explosion of explosive samples with different R_e in confined space, and the maximum relative deviation of the calculated value of quasi-static pressure from the experimental results is 4.7%.