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Published March 6, 2012 | Published
Journal Article Open

Highly nonlinear solitary wave propagation in Y-shaped granular crystals with variable branch angles


We study the propagation of highly nonlinear waves in a branched (Y-shaped) granular crystal composed of chains of spherical particles of different materials, arranged at variable branch angles. We experimentally test the dynamic behavior of a solitary pulse, or of a train of solitary waves, crossing the Y-junction interface, and splitting between the two branches. We describe the dependence of the split pulses' speed and amplitude on the branch angles. Analytic predictions based on the quasiparticle model and numerical simulations based on Hertzian interactions between the particles are found to be in excellent agreement with the experimental data.

Additional Information

© 2012 American Physical Society. Received 12 August 2011; published 6 March 2012. Support for this work was received from the Army Research Office (MURI Grant No. US ARO W911NF-09-1-0436 and Proposal No. 54272-EG).

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Published - Ngo2012p17710Phys_Rev_E.pdf


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