Modelling particle kinetic behaviour considering asperity contact: formulation and DEM simulations

Wang, C, Deng, A, Taheri, A, Zhao, H and Li, J 2019, 'Modelling particle kinetic behaviour considering asperity contact: formulation and DEM simulations', Granular Matter, vol. 21, no. 2, pp. 1-16.


Document type: Journal Article
Collection: Journal Articles

Title Modelling particle kinetic behaviour considering asperity contact: formulation and DEM simulations
Author(s) Wang, C
Deng, A
Taheri, A
Zhao, H
Li, J
Year 2019
Journal name Granular Matter
Volume number 21
Issue number 2
Start page 1
End page 16
Total pages 16
Publisher Springer
Abstract A model of formulating particle kinetic behaviour considering surface asperity is presented. The asperity was created by lining up on the surface a set of particles in varying distances. A moving particle was assigned a velocity to travel on the rugged surface where the particle trajectory and mechanical energy were gauged. The results were used to validate a discrete element framework which was developed and applied to examine the effect of surface asperity on the particle kinetic behaviour. Some interesting case studies were designed and simulated. The simulations suggested that the surface roughness influenced the energy dissipation caused in the particle-surface collisions. The research outcomes defined the inter-particle reaction from a micro-scale perspective and helped predict asperity-induced wear.
Subject Civil Geotechnical Engineering
Keyword(s) Collision
Contact mechanics
Energy dissipation
Surface roughness
DOI - identifier 10.1007/s10035-019-0879-5
Copyright notice © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.
ISSN 1434-5021
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