爆炸与冲击2017，Vol.37Issue(2)：339-346,8.DOI:10.11883/1001-1455(2017)02-0339-08
RDX/HMX颗粒炸药落锤撞击点火-燃烧机理
Ignition and burning mechanisms of RDX/HMX particles subjected to drop-weight impact
摘要
Abstract
The mechanical and chemical response of explosives under low velocity impact is the basis for the evaluation of their sensitivity.The drop-weight impact apparatus equipped with the optical photography was used to achieve a frequency of 150 thousand seconds of real time observation.It was capable of distinguishing the samples of "Go" or "no Go" and observing such characteristics of deformation,crushing and breakage,jetting,ignition and combustion evolution,of RDX and HMX particles under low velocity impact.The selected photographic frames show that ignition occurred in the partially melted RDX phase.But for the HMX particles,ignition mainly occurred in the solid phase.A violent jetting phenomenon often occurs before the reaction of combustion.The occurrence of jetting primarily results from the energy released by gaseous products,which push the pulverized or melted explosives splash.The response characteristics of single and multiple granular explosives were compared.Because of the interaction of the hot spots broken,the combustion reaction of the particles is more intense than that of the single particles.The size ratio of the image to the actual length can be used to estimate combustion wave propagation velocity in each case,which is very suitable for characterizing the intensity of the macro-combustion reaction.关键词
燃烧/落锤撞击/RDX/HMX/颗粒炸药/点火/高速摄影Key words
combustion/drop-weight impact/RDX/HMX/granular explosives/ignition/high-speed photography分类
数理科学引用本文复制引用
吴艳青,鲍小伟,王明扬,黄风雷,张柱..RDX/HMX颗粒炸药落锤撞击点火-燃烧机理[J].爆炸与冲击,2017,37(2):339-346,8.基金项目
国家自然科学基金项目(11572045) （11572045）
国防基础科研计划项目(B1520132004) （B1520132004）
山西省青年科学研究基金项目(2015021021) （2015021021）
