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Published December 12, 2007 | Published
Book Section - Chapter Open

Propagation of highly nonlinear signals in a two dimensional network of granular chains


We report the first experimental observation of highly nonlinear signals propagating in a two dimensional system composed of granular chains. In this system one of the chains contacts two others to allow splitting and redirecting the solitary-like signal formed in the first chain. The system consists of a double Y-shaped guide in which high- and low-modulus chains of spheres are arranged in various geometries. We observed fast splitting of the initial pulse, rapid chaotization of the signal and sharp bending of the propagating acoustic information. Pulse and energy trapping was also observed in composite systems assembled from hard- and soft-particles in the branches.

Additional Information

©2007 American Institute of Physics. Issue Date: December 12, 2007. This work was supported by the National Science Foundation (Grant No. DCMS03013220).

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