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A 2-D polygon discrete element method and program for simulating rockfill materials

Citation

Luo, T and Ooi, ET and Chan, AHC and Fu, S-J, A 2-D polygon discrete element method and program for simulating rockfill materials, Yantu Lixue/Rock and Soil Mechanics, 38, (3) pp. 883-892. ISSN 1000-7598 (2017) [Refereed Article]

Copyright Statement

Copyright 2017 Institute of Rock and Soil Mechanics

DOI: doi:10.16285/j.rsm.2017.03.034

Abstract

Every single particle is simulated by a polygon discrete element to capture the realistic shape of rockfill materials. A polygon discrete element method (PDEM) is developed by adopting a simple contact detection program and a polygon/polygon contact model. A linear program is adopted to detect the contact details between polygons. Then the normal contact force is calculated by a potential energy based polygon/polygon normal contact model, and a polygon discrete element calculation method is formed. Based on this method, a program called PDEM is developed to study the interaction between particles and both the translational and rotational motion of every particle from the microscopic view. The effect of micro-properties (e.g. particle shape, size, material properties et al.) on the macro-strength and deformation is enabled. A two-dimensional model test of a coarse aggregate was carried out by PDEM program. The stress and deformation laws consistent with the lab experiment were obtained, and the method and procedure were used to study the effectiveness of the rockfill.

Item Details

Item Type:Refereed Article
Keywords:biaxial test, contact detection, contact model, discrete element method, PDEM, Rockfill materials
Research Division:Engineering
Research Group:Other Engineering
Research Field:Engineering not elsewhere classified
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in Engineering
Author:Chan, AHC (Professor Andrew Chan)
ID Code:118220
Year Published:2017
Web of Science® Times Cited:1
Deposited By:Engineering
Deposited On:2017-07-06
Last Modified:2018-06-15
Downloads:0

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