Footprints in Sand: The Response of a Granular Material to Local Perturbations

@article{GengLudingPRL2001, abstract = {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.}, author = {Geng, Junfei and Howell, D. and Longhi, E. and Behringer, R. P. and Reydellet, G. and Vanel, L. and Cl{\'e}ment, E. and Luding, S. }, citeulike-article-id = {392989}, journal = {Phys. Rev. Lett.}, keywords = {2d, granular}, month = {July}, number = {3}, pages = {035506-1--035506-4}, posted-at = {2005-11-15 05:26:16}, priority = {2}, title = {Footprints in Sand: The Response of a Granular Material to Local Perturbations}, volume = {87}, year = {2001} }

TY - JOUR ID - GengLudingPRL2001 L3 - citeulike-article-id:392989 TI - Footprints in Sand: The Response of a Granular Material to Local Perturbations JF - Phys. Rev. Lett. VL - 87 IS - 3 SP - 035506-1 EP - 035506-4 N2 - 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. KW - 2d KW - granular AU - Geng, Junfei AU - Howell, D AU - Longhi, E AU - Behringer, RP AU - Reydellet, G AU - Vanel, L AU - Cl{\'e}ment, E AU - Luding, S PY - 2001/07/16/ ER -