Use of DEM in geomechanics: Special issue associated with the DEM 8 conference

O’Sullivan, Catherine; Cheng, Hongyang; Zhao, Jidong

doi:10.1016/j.compgeo.2021.104167

Cited by 3 publications

(2 citation statements)

References 12 publications

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“…Accordingly, researchers have simulated the micro/macromechanical behavior of granular soil using the discrete element method (DEM) as a virtual laboratory [26][27]. The growth of scientific research using the DEM for granular soil, as mentioned in recent studies, makes it possible to follow the discrete nature of the particles during simulations and to directly evaluate the movement and interaction of the particles [28].…”

Section: Introductionmentioning

confidence: 99%

The role of fines content and particle size ratio on the load-bearing structure of binary granular soil: A micromechanical approach

Nia,

Bayesteh,

Khodaparast

2024

Preprint

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The particle size ratio and fines content are the most important factors influencing the behavior of binary graded granular soil. Previous studies have focused more on the effects of the fabric, particle size distribution and fines content on the macroscopic response of binary mixtures. The effect of the fines participation factor (β) on the load-bearing structure of binary graded soil and estimation of this parameter (β) from the macro and micromechanical perspectives have rarely been evaluated. The present study used a micro-mechanical approach and DEM to evaluate the global void ratio (e), intergranular void ratio (e*) and the contribution of the fines content to the load-bearing structure of binary graded soil during drained and undrained tests. The effects of the particle size ratio, fines content, initial packing density and confining pressure on β also have been evaluated. The results showed that e* is a more reliable parameter than e for interpreting the behavior of binary graded soil. In a binary graded mixture that contains coarse and fine grains, β increased non-linearly and lower values of β were obtained for denser samples. With an increase in the particle size ratio, the values of β and microscopic parameters such as the coarse-fine (C-F) particle contact decreased. The decrease in the C-F particle contact caused a decrease in β. An equation is proposed to estimate β based on the fines content and particle size ratio of the binary mixtures.

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Section: Introductionmentioning

confidence: 99%

The role of fines content and particle size ratio on the load-bearing structure of binary granular soil: A micromechanical approach

Nia,

Bayesteh,

Khodaparast

2024

Preprint

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“…Since the seminal work of Cundall and Strack [1] , the Discrete Element Method (DEM) has now become a widespread tool among researchers exploring the fundamental behavior of granular materials. Along with a sustained increase in the number of publications, intensive development of new open-source and commercial DEM codes has taken place in the last decades [2] . Software such as PFC [3] , Yade [4] , LIGGGHTS [5] , and LAMMPS [6] have been successfully employed to model a range of granular systems including transportation and storage of powders, and mitigation of natural disasters [7] .…”

Section: Introductionmentioning

confidence: 99%