Influence of Aluminum Powder on Energy Release of HMX-based Air-blast Thermobaric Explosives

PIAO Zhongjie;ZHANG Ai'e;LUO Yu;OU Yapeng;JIAO Qingjie

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  • Sponsored by: China Association for Science and Technology (CAST)

    Editor-In-Chief: Xu Yida

    ISSN 1000-1093

    　

  • Hosted By: China Ordnance Society

    Published By: Acta Armamentarii

    CN 11-2176/TJ

Acta Armamentarii, a Chinese monthly journal, was first published in 1979. The journal is supervised by China Association for Science and Technology, sponsored by China Ordnance Society，and edited and published by Editorial Board of Acta Armamentarii. The Journal is included in all important domestic databases，and also collected by Engineering Index (EI, USA), Chemical Abstracts (CA, USA), Science Abstracts (SA, UK）, Abstract Journal (AJ, Russia), and Current Bibliography on Science and Technology(CBST).Acta Armamentarii has been selected into the journal Of Ordnance Science and Technology (Weapons Industry) Field Of High Quality Scientific and Technological Periodical Classification Catalogue (2022 edition), ranking T1, and the journal of Automotive Engineering Field of High Quality Scientific and technological Periodical classification Catalogue, ranking T2.
Acta Armamentarii ›› 2019, Vol. 40 ›› Issue (6) : 1190-1197. DOI: 10.3969/j.issn.1000-1093.2019.06.009
Paper

Influence of Aluminum Powder on Energy Release of HMX-based Air-blast Thermobaric Explosives

  • PIAO Zhongjie1, ZHANG Ai'e1, LUO Yu1, OU Yapeng2, JIAO Qingjie2
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Abstract

The shock wave overpressure field was measured through air-blast explosion experiment and calculated by using Autodyn to obtain the energy release law of the aluminized thermobaric explosive (TBX) and the influence of aluminum (Al) powder particle size. The overpressure field of TNT under air-blast loading was measured. The energy level of TBXs was evaluated based on TNT, and the after-burn effect of Al and its contribution to detonation heat were analyzed. The results show that the detonation heats of HMX and AP are due to the overpressure at 3 m. The energy release rate of aluminized TBX decreases due to the decalescence of Al, and increases after Al participating in the reaction. The after-burn effect of Al results in the high energy release rate in far-field, and the overpressure at 13 m approaches to 1.93 TNT equivalent. The two major influences of Al particle size on TBX mainly show inAl2O3 impairing the whole energy of TBX and the contribution of fine Al powder to the far-field overpressure of TBX being relatively lower. The results simulated by Autodyn was adjusted according to the measured data of 5 kg TBX, and the overpressure of 1 000 kg TBX was calculated using the adjusted constraint. The results show that the effective radius of damage of TBX approaches to 72 m, and is increased by about 50% compared with that of TNT. Key

Key words

air-blastthermobaricexplosive / energyreleaselaw / activatedaluminum / overpressurefield / radiusofdamage

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PIAO Zhongjie, ZHANG Ai'e, LUO Yu, OU Yapeng, JIAO Qingjie. Influence of Aluminum Powder on Energy Release of HMX-based Air-blast Thermobaric Explosives. Acta Armamentarii. 2019, 40(6): 1190-1197 https://doi.org/10.3969/j.issn.1000-1093.2019.06.009

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第40卷第6期
2019年6月兵工学报ACTA
ARMAMENTARIIVol.40No.6Jun.2019

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