Shock wave interactions with nano-structured materials: a molecular dynamics approach

被引：0
作者：
A. K. Al-Qananwah
J. Koplik
Y. Andreopoulos
机构：
[1] The City College of New York/CUNY,Experimental Fluid Mechanics and Aerodynamics Laboratory, Department of Mechanical Engineering
[2] The City College of New York/CUNY,Levich Institute and Department of Physics
来源：
Shock Waves | 2013年 / 23卷
关键词：
Shock waves; Blast mitigation; Nano porous materials; Nano-shock tube; Molecular dynamics; Shock reflections; Shock attenuation;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Porous materials have long been known to be effective in blast mitigation strategies. Nano-structured materials appear to have an even greater potential for blast mitigation because of their high surface-to-volume ratio, a geometric factor which substantially attenuates shock wave propagation. A molecular dynamics approach was used to explore the effects of this remarkable property on the behavior of traveling shocks impacting on solid materials. The computational setup included a moving piston, a gas region, and a target solid wall with and without a porous structure. The materials involved were represented by realistic interaction potentials. The results indicate that the presence of a nano-porous material layer in front of the target wall reduced the stress magnitude and the energy deposited inside the solid by about 30 %, while at the same time substantially decreasing the loading rate.
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页码：69 / 80
页数：11
相关论文
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