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Materials under Shock Loading: from Biot's Theory to Nano-Poromechanics
Porous materials are known to be effective in mitigating the impact of shock/blast waves. Nano-structured materials appear to have an even greater potential for such mitigation because of their high surface-to-volume ratio, a property which attenuates shock wave propagation substantially. Molecular dynamics was used to explore the effects of this remarkable characteristic on the behavior of traveling shocks impacting on solid materials with and without a porous structure attached. The materials involved were represented by realistic interaction potentials. Cases with various values of porosity have been investigated and the results indicate that the presence of a nano-porous material layer in front of a target wall reduces the energy deposited inside the solid by about 30 percent, while at the same time considerably decreasing its loading rate.
Materials under Shock Loading: from Biot's Theory to Nano-Poromechanics
Porous materials are known to be effective in mitigating the impact of shock/blast waves. Nano-structured materials appear to have an even greater potential for such mitigation because of their high surface-to-volume ratio, a property which attenuates shock wave propagation substantially. Molecular dynamics was used to explore the effects of this remarkable characteristic on the behavior of traveling shocks impacting on solid materials with and without a porous structure attached. The materials involved were represented by realistic interaction potentials. Cases with various values of porosity have been investigated and the results indicate that the presence of a nano-porous material layer in front of a target wall reduces the energy deposited inside the solid by about 30 percent, while at the same time considerably decreasing its loading rate.
Materials under Shock Loading: from Biot's Theory to Nano-Poromechanics
Al-Qananwah, Ahmad K. (author) / Koplik, Joel (author) / Andreopoulos, Yiannis (author)
Fifth Biot Conference on Poromechanics ; 2013 ; Vienna, Austria
Poromechanics V ; 844-852
2013-06-18
Conference paper
Electronic Resource
English
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