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Three dimensional steady‐state locus for dry monodisperse granular materials: DEM numerical results and theoretical modelling
Author(s) -
Redaelli Irene,
Prisco Claudio
Publication year - 2019
Publication title -
international journal for numerical and analytical methods in geomechanics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.419
H-Index - 91
eISSN - 1096-9853
pISSN - 0363-9061
DOI - 10.1002/nag.2985
Subject(s) - granular material , discrete element method , mechanics , void ratio , materials science , stress path , physics , plasticity , composite material
Summary In this paper, steady‐state conditions for ideal monodisperse dry granular materials are both theoretically and numerically analysed. A series of discrete element (DEM) numerical simulations have been performed on a periodic cell by imposing stress paths characterized by different Lode angles, pressures, and deviatoric strain rates. The dependence of the material response on both inertial number and loading path has been discussed in terms of void ratio, fabric, and granular temperature. DEM numerical results have been finally compared with the prediction of an already conceived model based on both kinetic and critical state theories, here suitably modified to account for three‐dimensional conditions.