Sound propagation in dense, frictional granular materials

O. Mouraille*, S. Luding

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

6 Citations (Scopus)

Abstract

The understanding of the sound propagation mechanisms (dispersion, scattering, power-spectra, etc.) inside dense granular matter is still a challenge. Using discrete element simulations we examine the effect of interparticle forces like friction and thus also the role of rotations. A small perturbation is created on one side of a dense, static packing of grains and then examined during propagation and when arriving at the opposite side. The perturbations can be applied to longitudinal, shear or rotational degrees of freedom in order to select the respective modes of information propagation. In order to bridge the gap between the particle "micro"-method and the "macroscopic" continuum theory, we use a micro-macro approach for finding relations between the wave speeds and the components of the stiffness tensor.

Original languageEnglish
Title of host publicationPowders and Grains 2005
Subtitle of host publicationProceedings of the International Conference on Powders & Grains 2005
EditorsR. Garcia-Rojo, H.J. Herrmann, Dean McNamara
Pages319-322
Number of pages4
ISBN (Electronic)9780429107733
DOIs
Publication statusE-pub ahead of print/First online - 1 Jul 2005
Externally publishedYes
Event5th International Conference on Micromechanics of Granular Media, Powders and Grains 2005 - Stuttgart, Germany
Duration: 18 Jul 200522 Jul 2005

Conference

Conference5th International Conference on Micromechanics of Granular Media, Powders and Grains 2005
Abbreviated titlePG 2005
CountryGermany
CityStuttgart
Period18/07/0522/07/05

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