Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Dynamics of a grain on a sandpile model
Autore:
Quartier, L; Andreotti, B; Douady, S; Daerr, A;
Indirizzi:
ENS, Lab Phys Stat, F-75231 Paris 05, France ENS Paris France 05ENS, Lab Phys Stat, F-75231 Paris 05, France
Titolo Testata:
PHYSICAL REVIEW E
fascicolo: 6, volume: 62, anno: 2000,
parte:, B
pagine: 8299 - 8307
SICI:
1063-651X(200012)62:6<8299:DOAGOA>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
BUMPY INCLINED LINE; SINGLE-PARTICLE; MOTION; SURFACE; FRICTION; PLANE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
12
Recensione:
Indirizzi per estratti:
Indirizzo: Quartier, L ENS, Lab Phys Stat, 24 Rue Lhomond, F-75231 Paris 05, France ENS 24 Rue Lhomond Paris France 05 , F-75231 Paris 05, France
Citazione:
L. Quartier et al., "Dynamics of a grain on a sandpile model", PHYS REV E, 62(6), 2000, pp. 8299-8307

Abstract

The dynamics of a macroscopic grain rolling on an inclined plane composed of fixed identical grains is investigated both experimentally and theoretically. As real sand, the system exhibits an hysteretic transition between static and dynamical states: for angles smaller than phi (d), the roller always stops, for angles larger than phi (s), it spontaneously starts rolling down. But for angles between phi (d) and phi (s), it can be either at rest or in motion with a constant velocity. It is shown that the limit velocity is given by the equilibrium between gravity driving and dissipation by the shocks. Moreover, the rough plane acts as a periodic potential trap whose width and depth decrease when the angle is increased: the static angle phi (s) corresponds to the angle for which the trap disappears; the dynamical angle phi (d) to that for which the limit velocity is sufficient to escape from the trap. Finally, a continuous description of the force globally acting on the grain is proposed, which preserves this hysteretic behavior.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/11/20 alle ore 15:43:57