Stress dip under a two-dimensional semipile of grains.
Phys Rev E Stat Nonlin Soft Matter Phys
; 77(6 Pt 1): 061307, 2008 Jun.
Article
en En
| MEDLINE
| ID: mdl-18643257
The origin of stress dip under the apex of a standard sandpile has stimulated significant debate within the scientific community. On the other hand, it could be argued that a semipile built against a vertical wall is of more practical interest since it serves as a model of dams, dykes, and embankments. There is surprisingly little information available for the stress distribution in this case. Here we show clear experimental evidence that the presence of the wall enhances the dip under a granular pile significantly. Our investigation provides insight into the influence of walls on the orientation of force chains and this appears to be key in enhancing the dip. Moreover, numerical simulations and experiments with different kinds of particles show that the vertical wall induces an alignment of isotropic particles.
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01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
Phys Rev E Stat Nonlin Soft Matter Phys
Asunto de la revista:
BIOFISICA
/
FISIOLOGIA
Año:
2008
Tipo del documento:
Article
País de afiliación:
Reino Unido
Pais de publicación:
Estados Unidos