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Quantitative evaluation of the effect of irregularly shaped particles in sheared granular assemblies

TitleQuantitative evaluation of the effect of irregularly shaped particles in sheared granular assemblies
Publication TypeJournal Article
Year of Publication2011
AuthorsMatsushima T, Chang CS
JournalGranular Matter
Volume13
Issue3
Start Page269
Pagination269-276
Date Published06/2011
KeywordsDiscrete element method (DEM), Particle shape effect, shear strength
Abstract

Assemblies of irregularly shaped particles exhibit higher shear strengths than assemblies of circular particles. We performed a series of 2D discrete element simulations to demonstrate that this particle shape effect is related to the induced moment and the additional dilation at the contacts between particles. We proposed a mechanically based particle shape index that is closely related to such contact behavior. A simple structural model is also investigated to clarify the micromechanical role of the particle shape.

DOI10.1007/s10035-011-0263-6