兵工自动化Issue(2)：62-65,4.DOI:10.7690/bgzdh.2016.02.016
柱形破片冲击带壳装药起爆判据研究
Research on the Critical Energy Criterion of Covered Explosive by Cylindrical Fragment Impacting
摘要
Abstract
In order to investigate the critical energy criterion of covered explosive detonated by cylindrical fragment impacting, a new equivalent model was made based on the rod criterion and one-dimensional initiation criterion. The initiation progress of covered explosive impacting by fragment is dealt as an equivalent to the progress of bared explosive by the method of theoretical calculation. Critical energy criterion contained with the length, diameter of the fragment and the thickness of the shell was deduced. Numerical simulation was done by software to validate the correctness of the conclusion. The results show that: the shock wave initiation is the main mechanism of explosive detonation while the explosive covered with thin shell, and the results of numerical simulation and theoretical calculation are basically the same, the critical energy criterion is applicable to the explosive covered with thin shell detonated by cylindrical fragment. And the L/D ratio has little effect on the critical detonation velocity while the L/D ratio is greater than the critical value.关键词
柱状破片/撞击动力学/起爆判据/数值模拟Key words
cylindrical fragment/impact dynamics/initiation criterion/numerical simulation分类
军事科技引用本文复制引用
濮赞泉,李文彬,郑宇..柱形破片冲击带壳装药起爆判据研究[J].兵工自动化,2016,(2):62-65,4.基金项目
国家自然科学基金资助项目(11302108) （11302108）
