火炸药学报2017，Vol.40Issue(5)：51-55,5.DOI:10.14077/j.issn.1007-7812.2017.05.009
JBO-9021炸药初始密度对爆轰波阵面曲率效应的影响
Effect of Initial Density on the Curvature Effect of Detonation Front for JBO-9021 Explosive
郭刘伟 1汪斌 1郑贤旭 1张光昇 1杨林俊 1李强1
作者信息
- 1. 中国工程物理研究院流体物理研究所冲击波物理与爆轰物理重点实验室,四川绵阳621999
- 折叠
摘要
Abstract
The curvature effect experiments were carried out for the insensitive JBO-9021 explosive grain with different radius (5.0,7.5 and 15mm) and different initial densities (1.894g/cm3-1.90 1g/cm3) at ambient temperature by using the high-speed streak camera and electric probes,and the steady-state detonation front shape and wave velocity were obtained and the change with density and radius of explosive grain was analyzed.Results show that,with increasing the initial density of JBO-9021 explosive from 1.894g/cm3 to 1.901g/cm3,the steady-state wave velocities of detonation wave for three kinds of JBO-9021 explosive grains with different radius increase,the steadystate front shape becomes flatter and the difference of the wave arriving time between the center point and edge point of front becomes smaller.In the range of small curvature (κ＜0.2mm-1),the relationship between the normal wave velocity Dn and the local curvature,(Dn (κ)),for detonation wave front of JBO-9021 explosive is not affected by the radius and density of the explosive grain.For larger curvature of κ＞0.2mm 1,the Dn (κ) relationship reveals a discrete trend with the radius and density of the explosive grain.The initial density and radius of JBO-9021 explosive grain affect the Dn (κ) relationship of great curvature for detonation wave front of explosive together.关键词
爆炸力学/钝感炸药/JBO-9021炸药/曲率效应/拟定态爆轰波形/拟定态爆轰波速/初始密度/Dn(κ)关系Key words
explosion mechanics/insensitive explosive/JBO-9021 explosive/curvature effect/steady-state detonation front wave shape/steady-state detonation wave velocity/initial density/Dn (κ) relationship分类
军事科技引用本文复制引用
郭刘伟,汪斌,郑贤旭,张光昇,杨林俊,李强..JBO-9021炸药初始密度对爆轰波阵面曲率效应的影响[J].火炸药学报,2017,40(5):51-55,5.
