Details

Autor(en) / Beteiligte

• Geng, J
• Howell, D
• Longhi, E
• Behringer, R P
• Reydellet, G
• Vanel, L
• Clément, E
• Luding, S

Titel

Footprints in sand: the response of a granular material to local perturbations

Ist Teil von

• Physical review letters, 2001-07, Vol.87 (3), p.035506-035506, Article 035506

Ort / Verlag

United States: The American Physical Society

Erscheinungsjahr

2001

Link zum Volltext

Quelle

APS Digital Backfile Archive (DFG Nationallizenzen)

Beschreibungen/Notizen

• We experimentally determine ensemble-averaged responses of granular packings to point forces, and we compare these results to recent models for force propagation in a granular material. We use 2D granular arrays consisting of photoelastic particles: either disks or pentagons, thus spanning the range from ordered to disordered packings. A key finding is that spatial ordering of the particles is a key factor in the force response. Ordered packings have a propagative component that does not occur in disordered packings.