Thermochemical release mechanisms and circumferential initiation affecting detonation in an aluminized explosive

IF 1.7 3区 材料科学 Q3 CHEMISTRY, APPLIED
Daniel J. Meaney, N. Glumac, Ronald E. Brown
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引用次数: 0

Abstract

ABSTRACT A modified thermochemical energy term and γ-law extension are incorporated into the JWL equation of state for predicting PBXN-111 detonation behavior under self- and externally supported conditions. The modifications resolve previous speculations regarding the causes affecting non-scalability of the reaction zone and detonation velocity with respect to explosive diameter, and a problem encountered to quantify increased detonation power gain by circumferential initiation. The modifications accurately consider “static effects” of size and the additional hydrodynamic compression resulting from a consecutive 2-step shock jump during convergent front collapse, leading to an elevated von Neumann spike and Chapman-Jouguet state between which physical and chemical transformations take place affecting shock regeneration and detonation power release. Necessary modifications to the CYLEX test are recommended to ensure that wall expansions are measured under steady-state conditions.
影响渗铝炸药爆轰的热化学释放机制和周向起爆
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来源期刊
Journal of Energetic Materials
Journal of Energetic Materials 工程技术-材料科学:综合
CiteScore
5.70
自引率
4.80%
发文量
34
审稿时长
1.8 months
期刊介绍: The Journal of Energetic Materials fills the need for an international forum of scientific and technical interchange in the disciplines of explosives, propellants, and pyrotechnics. It is a refereed publication which is published quarterly. Molecular orbital calculations, synthetic and analytical chemistry, formulation, ignition and detonation properties, thermal decomposition, hazards testing, biotechnology, and toxicological and environmental aspects of energetic materials production are appropriate subjects for articles submitted to the Journal.
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