INVESTIGADORES
IPPOLITO Irene Paula
artículos
Título:
Influence of the number of layers in the equilibrium of a granular packing
Autor/es:
M. A. AGUIRRE; N. NERONE; A. CALVO; I. IPPOLITO; D. BIDEAU
Revista:
PHYSICAL REVIEW E - STATISTICAL PHYSICS, PLASMAS, FLUIDS AND RELATED INTERDISCIPLINARY TOPICS
Editorial:
APS
Referencias:
Año: 2000 p. 738 - 743
ISSN:
1063-651X
Resumen:
M. A. Aguirre, N. Nerone, and A. Calvo Grupo de Medios Porosos, Facultad de Ingeniería, Universidad de Buenos Aires, Paseo Colón 850, 1063 Buenos Aires, Argentina I. Ippolito and D. Bideau Groupe Matière Condensée et Matériaux, UMR 6626, Université de Rennes 1, Campus de Beaulieu, 35042 Rennes Cedex, France Received 28 September 1999; published in the issue dated July 2000 This paper reports an experimental study on avalanches in a granular material contained in a confined geometry. The granular packing is made of monosize glass beads initially poured into a box that is slowly inclined until an avalanche takes place at a critical angle θM (maximum angle of stability). The avalanche involves a decrease of the surface slope until a second critical angle θr (angle of repose) is reached. Both angles and the mass displaced out of the box during the avalanche are studied as a function of the height of the granular packing. In order to avoid cohesion effects, experiments are carried out in a humidity controlled environment. For small packings, up to approximately ten layers, the stability of the system is significantly affected by the rough surface at the bottom. In contrast, for thicker systems, critical angles do not depend on the height. © 2000 The American Physical Society URL: http://link.aps.org/doi/10.1103/PhysRevE.62.738 DOI: 10.1103/PhysRevE.62.738