Nonmonotonic reversible branch in four model granular beds subjected to vertical vibration

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We present results from four independent models of a granular assembly subjected to tapping. We find that the steady-state packing fraction as a function of the tapping intensity is nonmonotonic. In particular, for high tapping intensities, we observe an increase of the packing fraction with tapping...

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Detalles Bibliográficos
Autores principales: Pugnaloni, Luis A., Mizrahi, Martín D., Carlevaro, Carlos Manuel, Vericat, Fernando
Formato: Articulo
Lenguaje:Inglés
Publicado: 2008
Materias:
Física
Atomic packing factor
Arch
Nanotechnology
Materials science
Compaction
Tapping
Granular media
Vertical vibration
Mechanics
Intensity (heat transfer)
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/126021
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
Descripción
Sumario:We present results from four independent models of a granular assembly subjected to tapping. We find that the steady-state packing fraction as a function of the tapping intensity is nonmonotonic. In particular, for high tapping intensities, we observe an increase of the packing fraction with tapping strength. This finding challenges the current understanding of compaction of granular media since the steady-state packing fraction is believed to decrease monotonically with increasing tapping intensity. We propose an explanation of our results based on the properties of the arches formed by the particles.

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