Effects of curvature-related DEM contact model on the macro-and micro-mechanical behaviours of granular soils

S Zhao, TM Evans, X Zhou - Géotechnique, 2018 - icevirtuallibrary.com
A comprehensive comparison between the Hertz–Mindlin model and the linear spring model
in true triaxial shear simulations of granular soils was conducted using the discrete-element …

Numerical evaluation of particle shape effect on small strain properties of granular soils

JY Nie, XS Shi, YF Cui, ZY Yang - Engineering Geology, 2022 - Elsevier
This paper presents a numerical investigation about the effect of particle shape on small
strain properties (eg, shear stiffness and Poisson's ratio) of granular soils through 3D …

On the influence of inter-particle friction and dilatancy in granular materials: a numerical analysis

ZX Yang, J Yang, LZ Wang - Granular matter, 2012 - Springer
Mechanical behavior of granular soils is a classic research realm but still yet not completely
understood as it can be influenced by a large number of factors, including confining …

Micromechanical modelling of monotonic drained and undrained shear behaviour of granular media using three‐dimensional DEM

TG Sitharam, SV Dinesh… - International Journal for …, 2002 - Wiley Online Library
In this paper, numerical simulation results of isotropic compression and triaxial static shear
tests under drained and undrained stress paths on polydisperse assembly of loose and …

A novel three-dimensional contact model for granulates incorporating rolling and twisting resistances

M Jiang, Z Shen, J Wang - Computers and Geotechnics, 2015 - Elsevier
This paper presents a new three-dimensional (3D) contact model incorporating rolling and
twisting resistances at inter-particle contact, which can be introduced into the discrete …

DEM simulations of the small strain stiffness of granular soils: effect of stress ratio

X Gu, J Yang, M Huang - Granular Matter, 2013 - Springer
DEM (discrete element method) simulations are carried out to evaluate the small strain
stiffness (ie Young's modulus and shear modulus) of a granular random packing with focus …

Micromechanics modeling for stress-strain behavior of granular soils. I: Theory

CS Chang, Y Chang, MG Kabir - Journal of geotechnical …, 1992 - ascelibrary.org
Perceiving granular material as a collection of particles, a constitutive law for granular
material is derived based on a micromechanics approach. The constitutive model takes into …

Influence of inherent anisotropy on mechanical behavior of granular materials based on DEM simulations

Z Mahmood, K Iwashita - International journal for numerical …, 2010 - Wiley Online Library
We study the influence of inherent anisotropy, ie bedding angle on stress–strain behavior
and shear band formation in quasi-static granular media. Plane strain biaxial tests are …

DEM analysis of small and small-to-medium strain shear modulus of sands

NSC Reddy, H He, K Senetakis - Computers and Geotechnics, 2022 - Elsevier
Despite the significant progresses in discrete-based numerical studies of granular materials,
most efforts have been placed in the study of large deformation problems and there are …

Effect of particle shape on interface behavior of DEM-simulated granular materials

RP Jensen, TB Edil, PJ Bosscher… - International Journal …, 2001 - ascelibrary.org
This paper presents a detailed computational investigation of the effect of particle shape on
the interface shear behavior of granular materials. The discrete element method (DEM) …