爆炸与冲击2011，Vol.31Issue(6)：592-599,8.
HMX颗粒炸药低速撞击点火实验研究
Experimental study on low-velocity impact ignition for HMX granular explosives
摘要
Abstract
Optical measurement components were designed and machined to be equipped in the conventional drop-weight system. Based on the improved drop-weight system, the response processes of different-mass HMX particles impacted by the different falling-height weight drops were recorded by a high-speed camera on the microsecond time scale. The processes consisted of the following phenomena; explosive particle deformation, melting, ignition, combustion and explosion. And a series of a-nalysis were carried out for the influences of drop-weight falling height and explosive incompactness degree on explosive particle deformation, ignition duration and combustion intensity. Investigated results show that the higher the falling height of the drop weight, the longer the duration of the plastic deformation, the ignition of the explosive instead of the injection is apt to occur; that the lower falling height of the drop weight tends to induce the explosive to intensively jet rather than be ignited; that the higher the incompactness degree of the explosive, the shorter the duration of the plastic deformation, multiple hot spots are easier to form and coalesce which leads to high combustion probability.关键词
爆炸力学/点火/落锤撞击/颗粒炸药/高速摄影Key words
mechanics of explosion/ ignition/ drop-weight impact/ granular explosive/ high-speed photographic observation分类
数理科学引用本文复制引用
吴艳青,黄风雷,艾德友..HMX颗粒炸药低速撞击点火实验研究[J].爆炸与冲击,2011,31(6):592-599,8.基金项目
国家自然科学基金项目(10832003,10902016) （10832003,10902016）
