Analysis on Influence of Layered Media with Different Wave Impedance on Propagation Characteristics of Explosive Wave
The layered media models with different wave impedance materials under one-dimensional strain explosive loading are studied in this paper. The three typical models are analysized, including steel plate, foam aluminum and concrete as the middle layer, and the upper and lower layers are concrete material. The attenuation of the amplitude of stress at the different position, the peak stress and the duration at the dissimilar material interface, and the absorbing energy distribution in the different layer for different models are obtained by numerical simulation. The material of the middle layer with lower impedance can effectively reduce the amplitude of stress, increase the duration of explosive wave and change the distribution of energy in different layers. But the influence of the middle layer with higher impedance material on layered media is contrary. The middle layer with soft material is the better matching of wave impedance to the propagation of explosive wave. The analytical conclusion is of great significance for mine safety protection of outburst and explosion.
explosive wave layered media wave impedance numerical simulation
DONG Yongxiang FENG Shunshan
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
国际会议
The 2007 International Symposium on Safety Science and Technology(2007采矿科学与安全技术国际学术会议)
河南焦作
英文
804-809
2007-04-17（万方平台首次上网日期，不代表论文的发表时间）