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arXiv · 1012.5023

Shearing of frictional sphere packings

Jean-François Métayer·Donald J. Suntrup III·Charles Radin·Harry L. Swinney·Matthias Schröter
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Abstract

We measure shear response in packings of glass beads by pulling a thin, rough, metal plate vertically through a bed of volume fraction phi, which is set, before the plate is pulled, in the range 0.575 to 0.628. The yield stress is velocity independent over 4 decades and increases exponentially with phi, with a transition at phi approximately 0.595. An analysis of the measured force fluctuations indicates that the shear modulus is significantly smaller than the bulk modulus.

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Jean-François Métayer, Donald J. Suntrup III, Charles Radin, Harry L. Swinney, Matthias Schröter. 2011-04-19. Shearing of frictional sphere packings. https://doi.org/10.1209/0295-5075%2F93%2F64003

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