Energy Trapping and Shock Disintegration in a Composite Granular Medium

C. Daraio, V. F. Nesterenko, E. B. Herbold, and S. Jin

Phys. Rev. Lett. 96, 058002 – Published 9 February 2006

Abstract

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.

Received 23 September 2005

DOI:https://doi.org/10.1103/PhysRevLett.96.058002

Authors & Affiliations

C. Daraio¹, V. F. Nesterenko^1,2,*, E. B. Herbold², and S. Jin^1,2

¹Materials Science and Engineering Program, University of California at San Diego, La Jolla, California 92093-0418, USA
²Department of Mechanical and Aerospace Engineering, University of California at San Diego, La Jolla, California 92093-0411, USA

^*Electronic address: vnesterenko@ucsd.edu

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Vol. 96, Iss. 5 — 10 February 2006

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