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Published July 20, 2004 | Published
Book Section - Chapter Open

Strongly Nonlinear Waves in 3D Phononic Crystals

Abstract

Three dimensional phononic crystal ("sonic vacuum" without prestress) was assembled from 137 vertical cavities arranged in hexagonal pattern in Silicone matrix filled with stainless steel spheres. This system has unique strongly nonlinear properties with respect to wave propagation inherited from nonlinear Hertz type elastic contact interaction. Trains of strongly nonlinear solitary waves excited by short duration impact were investigated. Solitary wave with speed below sound speed in the air and reflection from the boundary of two "sonic vacuums" were detected.

Additional Information

©2004 American Institute of Physics. Funding was provided by the National Science Foundation, NSF grant #0301322.

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