Title :
Dynamic response research of multi-layered protective structure under explosive loadings
Author :
Kai, Zhao ; Wen-chao, Luo ; Xiao-jun, Wang ; Guang-fa, Gao ; Fei, Liu
Author_Institution :
Dept. Modern Mech., Univ. of Sci. & Technol. of China, Hefei, China
Abstract :
Based on the theory of transmission and reflection of stress wave, several multi-layered structures with foam-concrete in civil engineering were proposed to decrease the strength of stress wave and hence, to raise the protective performance of underground structures. The propagation of stress wave in the multi-layered structures was simulated and the dynamic response and damage development of the structures were studied by commercial dynamic finite element software LS-DYNA. The results showed that multi-layered structures can reduce the strength of impacting loading and the range of spalling damage of the structures effectively.
Keywords :
concrete; explosions; finite element analysis; foams; geotechnical engineering; impact (mechanical); stress analysis; structural engineering computing; wave propagation; LS-DYNA; civil engineering; commercial dynamic finite element software; damage development; dynamic response; explosive loading; foam concrete; impacting loading; multilayered structures; protective performance; reflection theoy; spalling damage; stress wave propagation; stress wave strength; transmisson theoy; underground structures; Attenuation; Explosives; Loading; Materials; Reflection; Stress; Explosive Loading; Mulit-layer Protective Structures; Stress Wave; transmisson and reflection;
Conference_Titel :
Electric Technology and Civil Engineering (ICETCE), 2011 International Conference on
Conference_Location :
Lushan
Print_ISBN :
978-1-4577-0289-1
DOI :
10.1109/ICETCE.2011.5775731
