Energy trapping and shock disintegration in a composite granular medium

We report the first experimental observation of impulse confinement and the disintegration of shock and solitary waves in one-dimensional strongly nonlinear composite granular materials. The chains consist of alternating ensembles of beads with high and low elastic moduli (more than 2 orders of magn...

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Bibliographic Details
Published in:Physical review letters 2006-02, Vol.96 (5), p.058002-058002, Article 058002
Main Authors: Daraio, C, Nesterenko, V F, Herbold, E B, Jin, S
Format: Article
Language:English
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Summary:We report the first experimental observation of impulse confinement and the disintegration of shock and solitary waves in one-dimensional strongly nonlinear composite granular materials. The chains consist of alternating ensembles of beads with high and low elastic moduli (more than 2 orders of magnitude difference) of different masses. The trapped energy is contained within the "softer" sections of the composite chain and is slowly released in the form of weak, separated pulses over an extended period of time. This effect is enhanced by using a specific group assembly and precompression.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.96.058002