Force Fluctuations in Bead Packs

by: Liu, SR Nagel, DA Schecter, SN Coppersmith, S Majumdar, O Narayan, TA Witten

Science, Vol. 269, No. 5223. (28 July 1995), pp. 513-515.

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Abstract

Experimental observations and numerical simulations of the large force inhomogeneities present in stationary bead packs are presented. Forces much larger than the mean occurred but were exponentially rare. An exactly soluble model reproduced many aspects of the experiments and simulations. In this model, the fluctuations in the force distribution arise because of variations in the contact angles and the constraints imposed by the force balance on each bead in the pile. 10.1126/science.269.5223.513

@article{citeulike:2280858, abstract = {Experimental observations and numerical simulations of the large force inhomogeneities present in stationary bead packs are presented. Forces much larger than the mean occurred but were exponentially rare. An exactly soluble model reproduced many aspects of the experiments and simulations. In this model, the fluctuations in the force distribution arise because of variations in the contact angles and the constraints imposed by the force balance on each bead in the pile. 10.1126/science.269.5223.513}, author = {Liu and Nagel, S. R. and Schecter, D. A. and Coppersmith, S. N. and Majumdar, S. and Narayan, O. and Witten, T. A. }, citeulike-article-id = {2280858}, doi = {10.1126/science.269.5223.513}, journal = {Science}, keywords = {force, liu, nagel, packing}, month = {July}, number = {5223}, pages = {513--515}, posted-at = {2008-04-27 00:04:34}, priority = {2}, title = {Force Fluctuations in Bead Packs}, url = {http://dx.doi.org/10.1126/science.269.5223.513}, volume = {269}, year = {1995} }

RIS record

TY - JOUR ID - citeulike:2280858 L3 - citeulike-article-id:2280858 TI - Force Fluctuations in Bead Packs JF - Science VL - 269 IS - 5223 SP - 513 EP - 515 N2 - Experimental observations and numerical simulations of the large force inhomogeneities present in stationary bead packs are presented. Forces much larger than the mean occurred but were exponentially rare. An exactly soluble model reproduced many aspects of the experiments and simulations. In this model, the fluctuations in the force distribution arise because of variations in the contact angles and the constraints imposed by the force balance on each bead in the pile. 10.1126/science.269.5223.513 KW - force KW - liu KW - nagel KW - packing AU - Liu AU - Nagel, SR AU - Schecter, DA AU - Coppersmith, SN AU - Majumdar, S AU - Narayan, O AU - Witten, TA PY - 1995/07/28/ UR - http://dx.doi.org/10.1126/science.269.5223.513 ER -

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