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Published February 10, 2006 | Published
Journal Article Open

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 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.

Additional Information

© 2006 The American Physical Society. (Received 23 September 2005; revised 7 November 2005; published 9 February 2006) The authors wish to acknowledge the support of this work by the U.S. NSF (Grant No. DCMS03013220).

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Published - DARprl06.pdf


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