Experimental Study of Afterburning Enhancement Effect for Blast Load in Confined Compartment Space

doi:10.3969/j.issn.1000-1093.2020.01.009

Abstract

Abstract: In order to investigate the afterburning enhancement effect of detonation products for the blast load in a confined space, the explosion experiments of 5 different masses of TNT were performed in the confined spaces filled with air and helium. The data about shockwave-time history, quasi-static pressure, temperature of mixed gas in a confined space, and both the dynamic response and final deformation of steel plates were recorded by using the pressure and temperature sensors and the three-dimensional digital image correlation (DIC) method. The experimental results were analyzed and compared. The results show that the afterburning of detonation products of TNT has a dramatic influence on the confined blast load and the structural responses. The quasi-static pressures and temperature peaks of the five different masses of TNT explosions in helium environment are reduced by 38.81%-46.85% and 57.53%-76.35%, respectively, and the final deformation of tested specimens are decreased by 19.1%-48.9% compared with those of TNT explosions in air environment. It is suggested that the afterburning enhancement effect of detonation products for the confined blast load should be taken into account in predicting the dynamic responses of structures. Key

Key words: confinedcompartmentspace, blastload, afterburningeffect, quasi-staticpressure

CLC Number:

O383⁺.3

KONG Xiangshao, KUANG Zheng, ZHENG Cheng, WU Weiguo. Experimental Study of Afterburning Enhancement Effect for Blast Load in Confined Compartment Space[J]. Acta Armamentarii, 2020, 41(1): 75-85.

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第41卷第1期
2020 年1月兵工学报ACTA
ARMAMENTARIIVol.41No.1Jan.2020

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