Effects of Al/O on pressure properties of confined explosion from aluminized explosives

作     者：Xiao-yu DUAN Xue-yong GUO Qing-jie JIAO Jing-yuan ZHANG Qing-ming ZHANG 

作者机构：Beijing Institute of TechnologyBeijingChina 

出 版 物：《Defence Technology（防务技术）》 (Defence Technology)

年 卷 期：2017年第13卷第6期

页      面：428-433页

核心收录：

学科分类：082604[工学-军事化学与烟火技术] 0806[工学-冶金工程] 0817[工学-化学工程与技术] 08[工学] 0826[工学-兵器科学与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0703[理学-化学] 0701[理学-数学] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 

主　　题：Aluminized explosives Al/O Confined explosion Characteristic parameters 

摘      要：Pressure histories were tested in a 500-L chamber to identify the pressure load in confined explosion from aluminized explosives. Different aluminized explosives with Al/O, ranging from 0.25 to 1.23, were used. The recorded pressure curves could express the reflection of initial shock wave and the after burning combustion of aluminum. As there is no objective way to gain quasi-static pressure(P_(QS)),method of multipoint averaging was used in smoothing the original pressure curves to gain the P_(QS). The P_(QS),rising time of pressure(t_(QS)) which stands for the duration of the initial reflected shock wave, and attenuation coefficient(ω) which stands for the supportive effects of the combustion of aluminum to the P_(QS) are used to characterize the pressure load in the confined explosion from aluminized explosives. The research results showed that the Al/O significantly affected the three characteristic quantities. With the increase of Al/O, the P_(QS) increased at first and decreased later, gaining maximum at Al/O=0.99; the t_(QS)sustained growth and the ω decreased at first and increased later, gaining minimum at AI/O=0.99.