Coarse-grained molecular dynamics simulations of clay compression

نویسندگان

چکیده

This paper outlines a framework for using molecular dynamics to simulate the compression of kaolinite saturated at alkaline pH (=8) in low (1 mM) concentration solution. The particles are modelled as flat (3D) ellipsoids and their interactions described by modified form Gay-Berne potential, calibrated against DLVO theory. LAMMPS software was used generate monodisperse slightly polydisperse samples, isotropic 100 kPa. influences sample size strain rate on void ratio arrangement within samples were investigated via parametric studies. It is useful consider extent which system temperature (a measure average kinetic energy) controlled when assessing whether applied appropriate. found that number can be considered representative element volume orders magnitude larger than simulated earlier studies required case. A comparison between results obtained those published experimental show methodology proposed deliver sensible material considered.

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ژورنال

عنوان ژورنال: Computers and Geotechnics

سال: 2021

ISSN: ['1873-7633', '0266-352X']

DOI: https://doi.org/10.1016/j.compgeo.2021.104333