Issue |
EPL
Volume 100, Number 2, October 2012
|
|
---|---|---|
Article Number | 24003 | |
Number of page(s) | 6 | |
Section | Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics | |
DOI | https://doi.org/10.1209/0295-5075/100/24003 | |
Published online | 31 October 2012 |
Long-lived solitary wave in a precompressed granular chain
Department of Physics, The State University of New York at Buffalo - Buffalo, NY 14260, USA
Received: 10 June 2012
Accepted: 24 September 2012
Kinetic energy fluctuations of a non-dissipative 1D granular chain held between perfectly reflecting walls with various precompressions are numerically investigated. The dynamics of the system is explored for three cases, i) for a weakly precompressed chain which admits only solitary waves that break down into secondary waves under wall collisions, which is consistent with other findings in the literature; ii) for a strongly precompressed chain which exhibits mostly acoustic waves; and iii) for a chain with intermediate precompression. Case iii) accommodates a nearly stable solitary wave that travels unaffected through the acoustic waves and bounces back and forth between the walls for extremely long times.
PACS: 45.70.-n – Granular systems / 05.45.Yv – Solitons / 43.25.+y – Nonlinear acoustics
© EPLA, 2012
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