Density relaxation in a vibrated granular material

Journal Article · Mon May 01 00:00:00 EDT 1995 · Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics

DOI:https://doi.org/10.1103/PhysRevE.51.3957· OSTI ID:45551

Knight, J B; Fandrich, C G; Lau, C N; Jaeger, H M; Nagel, S R ^[1]

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1. The James Franck Institute and the Department of Physics, The University of Chicago, Chicago, Illinois 60637 (United States)

We report measurements of the density of a vibrated granular material as a function of time. The material studied consists of monodisperse spherical glass particles confined to a long, thin cylindrical tube. Vibrations cause the pile to evolve from a low density initial configuration toward a steady state with a final density that depends on the intensity of the vibrations. We find a complex time evolution that is incompatible with a single exponential relaxation. There appears to be a characteristic value of the acceleration that separates two regimes of packing behavior. The results are compared to current theories of compaction.

• DOE Contract Number: FG02-92ER25119
• OSTI ID: 45551
• Journal Information: Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, Vol. 51, Issue 5; Other Information: PBD: May 1995
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES
36 MATERIALS SCIENCE
GRANULAR MATERIALS
DENSITY
GLASS
SPHERES
MECHANICAL VIBRATIONS
RELAXATION
COMPACTIFICATION
TIME DEPENDENCE