Research on Double Layer Medium Gap Test and Analysis of Shock Initiation Characteristics of Acceptor Explosive

doi:10.3969/j.issn.1000-1093.2017.10.011

Abstract

Abstract: A calculation model for shock wave energy of acceptor explosive is established to study the shock initiation characteristics of acceptor explosive in double layer medium gap test, in which the effect of lateral rarefaction wave is considered, and a manganin piezoresistive pressure gauge is used for pressure measurement. The effects of sequencing (two kinds of wave impedance sequence), total thickness (30-60 mm), thickness distribution (PMMA thickness ratio of 10%~90% ) of double layer medium consisting of PMMA and LY-12 aluminum on the explosive transmissive shock wave parameters are analyzed, and the transmissive shock wave pressure and shock initiation situation of acceptor explosive are verified by the experiment. The results show that the transmissive shock wave energy is lower when the sequence with increasing wave impedance is applied, which is more beneficial for explosive stability; the transmissive shock wave energy decreases with the increase in medium thickness, and its decreasing amplitude gradually decreases; the change of shock wave energy with thickness distribution is relevant to the total thickness of double layer medium, and the transmissive shock wave energy exhibits a trend of ascending (h=30 mm), and increases first and then decreases (h=40-60 mm) with the increase in PMMA thickness. Key

Key words: ordnancescienceandtechnology, gaptest, shockinitiation, shockwave, waveimpedance

CLC Number:

O383⁺.3

CHEN Chuang， HAO Yong-ping, YANG Li， WANG Xiao-ming， LI Wen-bin， LI Wei-bing. Research on Double Layer Medium Gap Test and Analysis of Shock Initiation Characteristics of Acceptor Explosive[J]. Acta Armamentarii, 2017, 38(10): 1957-1964.

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第38卷
第10期2017 年10月兵工学报ACTA
ARMAMENTARIIVol.38No.10Oct.2017

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