Discrete element modelling of normal compression of clay

被引：20

作者：

de Bono, John P. ^{[1
]}

McDowell, Glenn R. ^{[1
]}

机构：

[1] Univ Nottingham, Nottingham Ctr Geomech, Nottingham NG7 2RD, England

来源：

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS | 2022年 / 162卷

基金：

英国工程与自然科学研究理事会;

关键词：

MECHANICAL-PROPERTIES; KAOLINITE SOILS; SIMULATION; FORCES;

D O I：

10.1016/j.jmps.2022.104847

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The discrete element method (DEM) has only rarely been used to simulate clay, due to difficulties in modelling clay particle shape and capturing the various particle interactions. This paper presents a new approach to simulate clay in three dimensions using DEM, featuring realistic particle shape and a new straightforward interaction law, which is able to reproduce all well-known characteristic platelet interactions. By varying the interactions between the platelets (including both the 'edges' and 'faces'), it is possible to account for a range of environmental conditions. Simple sedimentation and one-dimensional compression tests are presented, which correctly reproduce the expected behaviour, confirming the validity of the model. Particle-scale analysis reveals the influence of the platelet interactions on the bulk behaviour, and it is also shown that platelet aggregation appears to lead to a fractal distribution of aggregated 'stack' sizes as a means of space filling.

引用

页数：17

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