by De Arcangelis Lucilla, Lippiello Eugenio, Giacco Ferdinando, Pica Ciamarra Massimo
Abstract:
Granular materials jam when developing a network of contact forces able to resist the applied stresses. Through numerical simulations of the dynamics of the jamming process, we show that the jamming transition does not occur when the kinetic energy vanishes. Rather, as the system jams, the kinetic energy becomes dominated by rattler particles, which scatter within their cages. The relaxation of the kinetic energy in the jammed configuration exhibits a double power-law decay, which we interpret in terms of the interplay between backbone and rattler particles.
Reference:
Rattler-induced aging dynamics in jammed granular systems (De Arcangelis Lucilla, Lippiello Eugenio, Giacco Ferdinando, Pica Ciamarra Massimo), In SOFT MATTER, volume 13, 2017. (Articolo in rivista)
Bibtex Entry:
@article{luc17,
author = {De Arcangelis Lucilla, and Lippiello Eugenio, and Giacco Ferdinando, and Pica Ciamarra Massimo,},
pages = {9132-9137},
title = {Rattler-induced aging dynamics in jammed granular systems},
volume = {13},
note = {Articolo in rivista},
issn = {1744-683X},
journal = {SOFT MATTER},
doi = {10.1039/c7sm01976a},
year = {2017},
wosId = {WOS:000417960600006},
abstract = {Granular materials jam when developing a network of contact forces able to resist the applied stresses.
Through numerical simulations of the dynamics of the jamming process, we show that the jamming
transition does not occur when the kinetic energy vanishes. Rather, as the system jams, the kinetic
energy becomes dominated by rattler particles, which scatter within their cages. The relaxation of the
kinetic energy in the jammed configuration exhibits a double power-law decay, which we interpret in terms
of the interplay between backbone and rattler particles.}
}