Damage Effects of Shelled Explosive Explosion in Concrete

Liu Yan; Duan Zhuoping; Huang Fenglei; Wang Xinsheng

doi:10.14429/dsj.60.434

Liu Yan State Key Laboratory of Explosion Science and Technology, BIT
Duan Zhuoping State Key Laboratory of Explosion Science and Technology, BIT
Huang Fenglei State Key Laboratory of Explosion Science and Technology, BIT
Wang Xinsheng Beijing Institute of Technology, China

DOI: https://doi.org/10.14429/dsj.60.434

Keywords: shelled explosive, Concrete, filling coefficient, length-to-diameter ration, depth of burial, crater

Abstract

The damage of concrete subjected to explosion loading is an important issue in defense engineering. The damage degree of concrete is related to many factors, such as the type of explosive charge, the depth of burial and the parameters of concrete. In this paper, three factors are considered for experiments of shelled explosives in concrete targets, which are the filling coefficient, length-to-diameter ratio and the depth of burial. The filling coefficient is from 0.1 to 1 by changing thickness of shell, and length-to-diameter ratio is from 2.5 to 10. The unconfined compressive strength of concrete target for test is 35MPa. The experimental results showed that the sizes of craters of concretes are varied as the filling coefficient, length-to-diameter ratio and the depth of burial. The optimal values of filling coefficient, length-to-diameter ratio and the depth of burial of shelled charges were obtained to get largest damage regions of concrete targets. This work provides a base for evaluating the damage of concrete and designing the penetrating warhead.

Defence Science Journal, 2010, 60(6), pp.672-677, DOI:http://dx.doi.org/10.14429/dsj.60.434

Author Biographies

Liu Yan, State Key Laboratory of Explosion Science and Technology, BIT

Mr Liu Yan obtained his PhD from Beijing Institute of Technology, China, in 2003. He is working as an Associate Professor at State Key Laboratory of Explosion Science and Technology, BIT. His research interests are explosion mechanics, the vulnerability of targets, and damage effects.

Duan Zhuoping, State Key Laboratory of Explosion Science and Technology, BIT

Mr Duan Zhuoping obtained his PhD from Beijing Institute of Technology in 1994. Presently, he is Professor at State Key Laboratory of Explosion Science and Technology, BIT. His research areas are explosion damage technology and its applications.

Huang Fenglei, State Key Laboratory of Explosion Science and Technology, BIT

Mr Huang Fenglei obtained his PhD from Beijing Institute of Technology in 1992. At present, he is Professor at State Key Laboratory of Explosion Science and Technology, BIT and his research interests are in explosion dynamics, explosion damage and explosion protection.

Wang Xinsheng, Beijing Institute of Technology, China

Mr Wang Xinsheng obtained his Masters from Wuhan University of Technology, China, in 2005. He is pursuing PhD at Beijing Institute of Technology, China. His research areas are engineering mechanics and explosion damage.