Details

Autor(en) / Beteiligte

• Giacco, Ferdinando
• de Arcangelis, Lucilla
• Pica Ciamarra, Massimo
• Lippiello, Eugenio

Titel

Rattler-induced aging dynamics in jammed granular systems

Ist Teil von

• Soft matter, 2017-12, Vol.13 (48), p.9132-9137

Ort / Verlag

England: Royal Society of Chemistry

Erscheinungsjahr

2017

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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. In jammed granular systems the kinetic energy has a slow relaxation controlled by rattlers.