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Grain crushing and critical states observed in DEM simulations

Cheng, YP; Bolton, MD; Nakata, Y; (2005) Grain crushing and critical states observed in DEM simulations. In: (pp. pp. 1393-1397).

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Abstract

The uniqueness of critical states is investigated using the Discrete Element Method (DEM) with microspheres bonded together to represent crushable grains. Using a cubical assembly of these grains, constant-pressure and constant-volume compression tests were computed at different densities and stress-levels. The data are compared with two previous definitions of critical states. Grain crushing led to the observation that critical state voids ratios are a function not only of the current stress, but also of the maximum historic stress and of the stress-path which is followed. Grain crushing makes "critical state" an ambiguous concept. © 2005 Taylor & Francis Group.

Type: Proceedings paper
Title: Grain crushing and critical states observed in DEM simulations
ISBN: 0415383471
UCL classification: UCL > School of BEAMS > Faculty of Engineering Science
UCL > School of BEAMS > Faculty of Engineering Science > Civil, Environmental and Geomatic Engineering
URI: http://discovery.ucl.ac.uk/id/eprint/11099
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