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Communication Dans Un Congrès Année : 2012

Experimental study of nonlinear acoustic waves in a granular chain

Résumé

The nonlinear acoustic propagation is experimentally studied in a monoatomic and straight granular chain made with identical spherical beads. The interaction law between the beads is well described by the intrinsically nonlinear Hertz-Mindlin theory, leading to a nonlinear propagation of the acoustic waves. We focus here on the study of the nonlinear resonance phenomenon in a finite length granular chain. We observe dispersion in linear wave propagation associated to the periodicity of the medium, but also a dispersion of nonlinearity. Interpretations on the basis of the hysteretic contact behavior are provided for the latter phenomenon, and lead to the conclusion that under some conditions this type of medium exhibits a dominant nonlinearity of the hysteretic type.

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Dates et versions

hal-00810776 , version 1 (23-04-2012)

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  • HAL Id : hal-00810776 , version 1

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Jérémy Cabaret, Vincent Tournat, Philippe Béquin, Valeriy Andreev, Vitali Goussev. Experimental study of nonlinear acoustic waves in a granular chain. Acoustics 2012, Apr 2012, Nantes, France. ⟨hal-00810776⟩
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