Journal
POWDER TECHNOLOGY
Volume 158, Issue 1-3, Pages 45-50Publisher
ELSEVIER
DOI: 10.1016/j.powtec.2005.04.018
Keywords
DEM simulation; bi-axial shear; cohesive frictional powders; yield stress
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For continuum mechanics based silo design, the measuring and modelling methods for the shear flow behaviour of cohesive, frictional powders play a central role. Studies of the particle mechanics can provide a better physical microscopic understanding of the essential constitutive functions of a powder continuum. The discrete element method (DEM) is a tool that allows considering the details of the contact and adhesion forces for each particle contact. During bi-axial shear, the DEM results show an elastic regime, yielding, and steady-state flow of a two-dimensional model powder. (c) 2005 Elsevier B.V. All rights reserved.
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