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
References
[1] CAI Rui-jiao. Initiators pyrotechnics design principle. Beijing: Beijing Institute of Technology Press,2002: 322-324.
[2] YANG Hui-qun, WANG Ze-shan, WEI Xiao-an. Study on the attenuation regularity of detonation wave. Energetic Materials, 2005,8(2): 214-216.
[3] LI guo-xin, CHENG guo-yuan, JIAO qing-jie. Initiators pyrotechnics experiment and testing technique. Beijing Institute of Technology Press, 1997: 104-106.
[4] HAN Xiu-feng, YAN Nan, CAI Rui-jiao. Impact of manganin transducer protective medium on detonator’s output record waveform. Transactions of Beijing Institute of Technology, 2004, 5: 462-464.
[5] CAI Suo-zheng. Computational methods. China Science and Technology Press, 1993: 152-156.
[6] MA Xiao-qing. Shock kinetics. Beijing Institute of Technology Press, 1992: 180-182.
[full text view]