Effect of Particle Shape on the Stress Dip Under a Sandpile

by: I Zuriguel, T Mullin, JM Rotter

Physical Review Letters, Vol. 98, No. 2. (2007)

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Abstract

The results of an experimental investigation into the effects of particle shape on the stress dip formed under a 2D sandpile is reported. We find good agreement with previous results of a small dip for mixtures of disks poured from a localized source. The new finding is that the dip is significantly enhanced when elliptical particles are used. We attribute the amplification of the effect to orientational ordering induced by the shape of the grains which removes the degeneracy of circular particles.

@article{citeulike:2563129, abstract = {The results of an experimental investigation into the effects of particle shape on the stress dip formed under a 2D sandpile is reported. We find good agreement with previous results of a small dip for mixtures of disks poured from a localized source. The new finding is that the dip is significantly enhanced when elliptical particles are used. We attribute the amplification of the effect to orientational ordering induced by the shape of the grains which removes the degeneracy of circular particles.}, author = {Zuriguel, I. and Mullin, T. and Rotter, J. M. }, citeulike-article-id = {2563129}, doi = {10.1103/PhysRevLett.98.028001}, journal = {Physical Review Letters}, keywords = {2007, experiment, force, grains}, number = {2}, posted-at = {2008-03-19 17:14:36}, priority = {2}, publisher = {APS}, title = {Effect of Particle Shape on the Stress Dip Under a Sandpile}, url = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal\&id=PRLTAO000098000002028001000001\&idtype=cvips\&gifs=yes}, volume = {98}, year = {2007} }

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TY - JOUR ID - citeulike:2563129 TI - Effect of Particle Shape on the Stress Dip Under a Sandpile JF - Physical Review Letters VL - 98 IS - 2 PB - APS N2 - The results of an experimental investigation into the effects of particle shape on the stress dip formed under a 2D sandpile is reported. We find good agreement with previous results of a small dip for mixtures of disks poured from a localized source. The new finding is that the dip is significantly enhanced when elliptical particles are used. We attribute the amplification of the effect to orientational ordering induced by the shape of the grains which removes the degeneracy of circular particles. KW - 2007 KW - experiment KW - force KW - grains AU - Zuriguel, I AU - Mullin, T AU - Rotter, JM PY - 2007/// UR - http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PRLTAO000098000002028001000001&idtype=cvips&gifs=yes ER -

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