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Title: Role of particle shape on the stress propagation in granular packings
Author: Cruz Hidalgo, Raúl
Zuriguel, Iker
Maza, Diego
Pagonabarraga Mora, Ignacio
Keywords: Física de partícules
Simetria (Física)
Particle physics
Symmetry (Physics)
Issue Date: 9-Sep-2009
Publisher: American Physical Society
Abstract: We present an experimental and numerical study on the influence that particle aspect ratio has on the mechanical and structural properties of granular packings. For grains with maximal symmetry (squares), the stress propagation in the packing localizes forming chainlike forces analogous to the ones observed for spherical grains. This scenario can be understood in terms of stochastic models of aggregation and random multiplicative processes. As the grains elongate, the stress propagation is strongly affected. The interparticle normal force distribution tends toward a Gaussian, and, correspondingly, the force chains spread leading to a more uniform stress distribution reminiscent of the hydrostatic profiles known for standard liquids.
Note: Reproducció del document publicat a:
It is part of: Physical Review Letters, 2009, vol. 103, num. 11, p. 118001
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ISSN: 0031-9007
Appears in Collections:Articles publicats en revistes (Física de la Matèria Condensada)

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