Rheology of sheared polyhedral granular materials in inclined flows

J Hao, Y Guo - Physics of Fluids, 2023 - pubs.aip.org
An investigation of frictional, Platonic solid-shaped particle flows on inclined planes is
performed using the discrete element method, and the effects of particle angular shape on …

A Phase-Field Discrete Element Method to study chemo-mechanical coupling in granular materials

A Sac-Morane, M Veveakis, H Rattez - Computer Methods in Applied …, 2024 - Elsevier
This paper presents an extension of the discrete element method using a phase-field
formulation to incorporate grain shape and its evolution. The introduction of a phase variable …

[HTML][HTML] Comparison of contact treatment methods for rigid polyhedral discrete element models

Á Orosz, K Bagi - International Journal of Rock Mechanics and Mining …, 2023 - Elsevier
Blocky rock and stone structures (such as jointed rocks mass, masonry structures and
railway ballast) are often submitted to dynamic effects. Their mechanical behaviour can be …

Morphological reconstruction method of irregular shaped ballast particles and application in numerical simulation of ballasted track

J Xiao, X Zhang, D Zhang, L Xue, S Sun… - Transportation …, 2020 - Elsevier
To quantitatively investigate the morphological features of railway ballast, a new statistical
index, Curvature Index (CI), was presented. With a set of 584 digitized railway ballast …

An improved index of mixing degree and its effect on the strength of binary geotechnical mixtures

S Liu, W Hu, J Gong, Z Nie - Granular Matter, 2022 - Springer
Binary geotechnical mixtures are usually studied as homogeneous materials; however, it is
difficult for coarse and fine particles to mix evenly during the formation process of binary …

Experimental Micro-Macromechanics: Critical States of Round/Angular Granular Mixtures

U Ali, M Kikumoto - Journal of Geotechnical and Geoenvironmental …, 2024 - ascelibrary.org
This paper comprehensively investigates the influence of mixing angular particles on
macroscopic shear strength and microscopic particle motion in granular mixtures. Circular …

Experimental micro–macromechanics: particle shape effect on the biaxial shear response of particulate systems

U Ali, M Kikumoto, M Ciantia, M Previtali, Y Cui - Géotechnique, 2023 - icevirtuallibrary.com
The effect of particle shape on micro and macroscopic behaviour is investigated
experimentally through a series of biaxial compression tests on round and angular rods …

Why modeling particle shape matters: significance of particle-scale modeling in describing global and local granular responses

U Ali, M Kikumoto, MO Ciantia, Y Cui… - Journal of Geotechnical …, 2024 - ascelibrary.org
The applicability of particle-scale modeling using the discrete-element method (DEM) is
typically evaluated by comparing simulation results with stress–strain responses observed in …

Assessment of macro and micro mechanical properties of fresh and deteriorated ballast combining laboratory tests and 2D-discrete element methods

T Binaree, S Kwunjai, P Jitsangiam, E Azéma… - … and Building Materials, 2024 - Elsevier
This research initially investigates the mechanical behavior of fresh and used ballast grain
assemblies through a combination of laboratory experiments and discrete element modeling …

Image processing algorithm for systematic evaluation of angle of repose and void ratio for particulate media

AM Alshammari, D Fratta - Advanced Powder Technology, 2024 - Elsevier
The angle of repose is a simple yet helpful parameter to evaluate the frictional response of
particulate media. Due to its importance, multiple scientific and engineering fields rely on the …