Experiments in randomly agitated granular assemblies close to the jamming transition
Abstract
We present here the preliminary results obtained for two experiments on randomly agitated granular assemblies using a novel way of shaking. First we discuss the transport properties of a 2D model system undergoing classical shaking that show the importance of large scale dynamics for this type of agitation and offer a local view of the microscopic motions of a grain. We then develop a new way of vibrating the system allowing for random accelerations smaller than gravity. Using this method we study the evolution of the free surface as well as results from a light scattering method for a 3D model system. The final aim of these experiments is to investigate the ideas of effective temperature on the one hand as a function of inherent states and on the other hand using fluctuation dissipation relations.
Cite
@article{arxiv.cond-mat/0403604,
title = {Experiments in randomly agitated granular assemblies close to the jamming transition},
author = {G. Caballero and A. Lindner and G. Ovarlez and G. Reydellet and J. Lanuza and E. Clement},
journal= {arXiv preprint arXiv:cond-mat/0403604},
year = {2009}
}
Comments
Contribution to the volume "Unifying Concepts in Granular Media and Glasses", edt.s A. Coniglio, A. Fierro, H.J. Herrmann and M. Nicodemi