基于多普勒测速技术的JB-9014炸药反应区结构研究

裴红波; 黄文斌; 覃锦程; 张旭; 赵锋; 郑贤旭

doi:10.11883/bzycj-2017-0379

基于多普勒测速技术的JB-9014炸药反应区结构研究

doi: 10.11883/bzycj-2017-0379

中国工程物理研究院流体物理研究所, 四川绵阳 621999

基金项目:

国家自然科学基金项目 11602248

科学挑战专题项目 TZ2018001

国防科工局技术基础项目 JSZL2015212C001

详细信息

作者简介:
裴红波(1987-), 男, 博士, 助理研究员

通讯作者:
黄文斌, caephwb@163.com

中图分类号: O381
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- 文章访问数: 5460
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- 被引次数: 1
出版历程
- 收稿日期: 2017-10-18
- 修回日期: 2017-11-15
- 刊出日期: 2018-05-25

Reaction zone structure of JB-9014 explosive measured by PDV

Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621999, Sichuan, China

摘要

摘要: 为了解TATB基JB-9014炸药的爆轰过程，利用火炮驱动飞片加载，采用光子多普勒测速技术，对JB-9014炸药的爆轰反应区结构进行了实验研究。实验中利用火炮发射高速蓝宝石飞片冲击起爆被测炸药，在炸药后表面安装镀膜氟化锂（LiF）窗口测量炸药爆轰时的界面粒子速度，测试过程的时间分辨率小于2 ns。将粒子速度剖面对时间进行一阶求导，通过一阶导数的拐点来确定炸药反应区宽度、反应时间。研究结果表明，钝感炸药JB-9014的反应时间为（0.26±0.02）μs，对应的化学反应区宽度为（1.5±0.2）mm，反应结束点处的压力为27.3 GPa，von Neumann峰处压力为40.3 GPa。
- 光子多普勒测速仪 /
- JB-9014炸药 /
- 氟化锂窗口 /
- 粒子速度 /
- 反应区结构
Abstract: To understand the detonation reaction process of the TATB-based JB-9014 explosive, experimental measurements of the detonation wave profile of solid explosives using photon Doppler velocimetry (PDV) were performed. Planar detonations were produced by impacting the explosive with a sapphire flyer in a gas gun. Particle velocity wave profiles were measured at the explosive/window interface using PDV. LiF windows with very thin vapor deposited aluminum mirrors were used, and the time resolution of the measuring system was less than 2 ns. The interface velocity histories were derived to determine the reaction zone length and reaction time. The results show that the reaction time of JB-9014 is (0.26±0.02) μs, and the corresponding reaction zone length is (1.5±0.2) mm. The pressure at the end of chemical reaction is 27.3 GPa, the pressure at von Neumann spike is 40.3 GPa.
- photon Doppler velocimetry /
- JB-9014 explosive /
- LiF windows /
- particle velocity /
- reaction zone structure

HTML全文

图 1 爆轰反应区结构示意图

Figure 1. Schematic of the detonation wave profile

下载: 全尺寸图片幻灯片

图 2 测试系统示意图

Figure 2. Schematic of measurement system

下载: 全尺寸图片幻灯片

图 3 实验界面粒子速度历程

Figure 3. Experimental interface particle velocity-time curves

下载: 全尺寸图片幻灯片

图 4 界面粒子加速度

Figure 4. Interface particle acceleration history

下载: 全尺寸图片幻灯片

表 1 TATB基炸药反应区时间和宽度

Table 1. Time and length of reaction zone for TATB-based explosive

炸药	方法	τ/μs	a/mm	来源	备注
JB-9014	激光测速+粒子速度求导	0.26±0.02	1.5±0.2	本文
PBX9502	激光测速+炸药状态方程	0.28	2.1	Sheffield等^[7]
PBX9502	曲率效应试验+数值模拟		2.9	Wescott等^[19]
PBX9502	激光测速+数值模拟	0.3	2	Seitz等^[8]
PBX9502	激光测速+炸药状态方程	0.21±0.02 0.28±0.01		Dattelbaum等^[20]	LiF窗口 Kel-F窗口
JB-9014	光电法+粒子速度求导	0.31	1.75	赵同虎等^[5]
TATB/inert	光电法+粒子速度求导	0.26±0.05	1.24±0.17	Loboiko等^[6]

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