高压物理学报2017，Vol.31Issue(6)：820-824,5.DOI:10.11858/gywlxb.2017.06.018
落锤撞击下非均匀炸药点火特性实验研究
Experimental Research on Ignition and Burning of Heterogeneous Explosives under Drop-Weight Impact
摘要
Abstract
In this work we presented an improved form of the drop-weight system in which,instead of being impacted directly by the drop weight,the sample was impacted by the upper anvil which was beforehand impacted by the drop weight.Based on this improved drop-weight system,the ignition and burning processes of HMX based plastic bonded explosives were recorded by a high-speed camera at the microsecond time scale.The experiment results indicate that,under low pressure and long pulse loading,heterogeneous explosives mainly undergo the process of compression→plastic flow→particle breaking→formation of local high temperature region→ initiation→ burning→ quenching,which is a typical non-shock initiation process.But,because the explosive is heterogeneous at the mesoscale,the location of the high temperature region,the reaction duration and the reaction violence of heterogene-ous explosive samples are different from each other under the same experimental conditions.关键词
点火/落锤撞击/非均匀炸药Key words
ignition/drop-weight impact/heterogeneous explosive分类
数理科学引用本文复制引用
杨洁,尚海林,李克武,黄学义,何真..落锤撞击下非均匀炸药点火特性实验研究[J].高压物理学报,2017,31(6):820-824,5.基金项目
国家自然科学基金青年基金(11702273) （11702273）
冲击波物理与爆轰物理重点实验室基金(9140C670402150C67291) （9140C670402150C67291）
中国工程物理研究院流体物理研究所领域规划项目(LYGH201402) （LYGH201402）
