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

Junfei Geng*, D. Howell, E. Longhi, R. P. Behringer, G. Reydellet, L. Vanel, E. Clément, S. Luding

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

238 Citations (Scopus)
21 Downloads (Pure)


The forced response of granular packings to point forces was experimentally measured and compared to recent models for force propogation in a granular material. 2D granular arrays made of photoelastic particles were used for the modeling. Spatial ordering of the particles was found to be a key factor in the force response. The propogative component of ordered packings was found to dimnish with the degree of disorder.

Original languageEnglish
Article number035506
Pages (from-to)355061-355064
Number of pages4
JournalPhysical review letters
Issue number3
Publication statusPublished - 16 Jul 2001
Externally publishedYes


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