Particle shape effect on the shear banding in DEM-simulated sands

M Wu, F Wu, J Wang - Granular Matter, 2022 - Springer
Particle morphology is an essential characteristic that plays a crucial role in determining the
mechanical responses of granular materials. A series of discrete element method (DEM) …

DEM investigation on the evolution of microstructure in granular soils under shearing

X Gu, M Huang, J Qian - Granular Matter, 2014 - Springer
The mechanical behaviors of granular soils at different initial densities and confining
pressures in the drained and undrained triaxial tests are investigated micromechanically by …

Stress transmission in internally unstable gap-graded soils using discrete element modeling

MF Langroudi, A Soroush, PT Shourijeh, R Shafipour - Powder technology, 2013 - Elsevier
Three dimensional discrete element modeling is employed to investigate micromechanical
behavior of internally unstable/stable gap-graded soils under isotropic compression. Two …

Determination of contact parameters for discrete element method simulations of granular systems

KF Malone, BH Xu - Particuology, 2008 - Elsevier
Both linear-spring–dashpot (LSD) and non-linear Hertzian-spring–dashpot (HSD) contact
models are commonly used for the calculation of contact forces in Discrete Element Method …

Micromechanical modeling for inherent anisotropy in granular materials

CS Chang, ZY Yin - Journal of engineering mechanics, 2010 - ascelibrary.org
In this paper, a description of inherent anisotropy of soil, based on micromechanics
framework, is presented. The problem is formulated by assuming that sliding of two contact …

Calibration method of soil contact characteristic parameters based on DEM theory

W Xianliang, H Hong, W Qingjie, LI Hongwen… - Nongye Jixie Xuebao …, 2017 - nyjxxb.net
Discrete element modelling (DEM) is a numerical method for examining the dynamic
behaviour of granular media. Soil is a nonuniform, discontinuity, elastic-plastic complicated …

A three-dimensional discrete element model using arrays of ellipsoids

X Lin, TT Ng - Geotechnique, 1997 - icevirtuallibrary.com
For the purpose of improving computer simulation of granular materials, a three-dimensional
discrete element model using random arrays of elastic ellipsoidal particles is developed …

Micromechanical modeling of deformation and failure for granulates with frictional contacts

CS Chang - Mechanics of materials, 1993 - Elsevier
Perceiving granular material as a collection of particles, a constitutive law for granular
material is derived based on micromechanics approach, taking into account the …

Micromechanical investigation of the particle size effect on the shear strength of uncrushable granular materials

ZY Wang, P Wang, ZY Yin, R Wang - Acta Geotechnica, 2022 - Springer
Particle size strongly influences the shear strength of granular materials. However, previous
studies of the particle size effect have focused mainly on the macroscopic behavior of …

Discrete element modeling of direct shear tests for a granular material

Y Yan, S Ji - International Journal for Numerical and Analytical …, 2010 - Wiley Online Library
A succinct 3D discrete element model, with clumps to resemble the real shapes of granular
materials, is developed. The quaternion method is introduced to transform the motion and …