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Study on energy output rule on attenuation of small diameter charge detonation wave passing by air-gap

ZHAO Hai-xia(赵海霞)1, WANG Su-bo(王涑波)1,HU Shuang-qi(胡双启)1, JIAO Qing-jie(焦清介)2, XU Xin-chun(徐新春)2

 

(1. Key Laboratory of Instrumentation Science & Dynamic Measurement (North University of China),Ministry of Education, Taiyuan 030051,China;2. State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China)

 

Abstract:In order to study energy output rule on attenuation of small diameter charge detonation wave passing by air-gap, the detonation shock wave pressures of different charge diameters and confinements, which are attenuated in air-gap, are measured by using the manganin piezoresistance method. Thus the experiential attenuation rule of X booster explosive is obtained with confinement of 45# steel and polymethyl methacrylate(PMMA), the experiential relational expressions in charge diameter and air-gap thickness are gained. The results indicate that exponential rule is obtained in accordance with attenuation of small diameter charge detonation wave passing by air-gap, and the bigger charge diameter, the smaller modulus decay. By changing air-gap thickness, the detonation pressure is also changed. The detonation performance can be controlled by adjusting charge dimension, confinement and air-gap thickness.

 

Key words:small diameter charge; detonation pressure; confinement condition; attenuation

 

CLD number: TJ450.3+1 Document code: A

 

Article ID: 1674-8042(2012)03-0215-04  doi: 10.3969/j.issn.1674-8042.2012.03.003

 

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