Energy Release Characteristics of Composite Charge in Confined Space Explosion

被引：0
|
作者：
Kan R.-Z. [1 ]
Nie J.-X. [1 ]
Liu Z. [1 ]
Guo X.-Y. [1 ]
Jiao Q.-J. [1 ]
Zhu Y.-Z. [2 ]
Liu P. [2 ]
机构：
[1] State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing
[2] Chongqing Hongyu Precision Industry Co. Ltd., Chongqing
来源：
Huozhayao Xuebao/Chinese Journal of Explosives and Propellants | 2022年 / 45卷 / 03期
关键词：
Aluminized explosives; Composite explosive charge; Confined space explosion; Explosion mechanics; Quasi-static pressure; Transient temperature;
D O I：
10.14077/j.issn.1007-7812.202203020
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In order to research the explosion characteristics of HMX-based aluminized explosives with different charge structures in confined space, experiments on the confined explosion of samples with composite charge structures and uniform charge structures were carried out. A closed explosion experimental device with temperature and pressure measurement was established. The explosion pressure and temperature of the sample with composite charge structure were compared with the same sample having the uniform charge structure. The result shows that the peak pressure and quasi-static pressure of the explosion shock wave of the sample with composite charge structure are 12.7% and 8.0% higher than those with the uniform charge structure, respectively. The explosion energy release in confined space can be improved through the composite charge structure, which consists of the outer layer with high detonation velocity explosive and the inner layer with high aluminum/oxygen ratio explosive. The peak explosion temperature of composite charge structure is 621℃, which decreses by 124℃ compared with the uniform charge structure of 745℃, but the samples with composite charge structure can maintain a high temperature around 600℃ in confined space for a long period. © 2022, Editorial Board of Journal of Explosives & Propellants. All right reserved.
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页码：377 / 382
页数：5
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