Discrete Modelling of Compaction of Non-spherical Particles

Yi He, Tim J. Evans, Aibing Yu, Runyu Yang

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

Abstract

Compaction behaviour and mechanical response of a compact show strong dependence on particle shape. In this study, a numerical model based on the discrete element method (DEM) was developed to study the compaction behaviour of spheroidal particles. In the model, particle shape was approximated by gluing multiple spheres together. A bonded particle model was adopted to describe interparticle bonding force. The DEM model was first validated by comparing the properties of packing of spheroids (packing density, coordination number) with literature data and then applied to both die compaction and unconfined compression. In die compaction, the effect of aspect ratio on the densification was mainly due to the difference in the initial packing. In unconfined compression, the increase in compressive strength with increasing aspect ratio was attributed to the increase in the number of interparticle bonding. The findings facilitate a better understanding of the relation of particle shape to the compaction behaviour and compact strength.

Original languageEnglish
Title of host publicationEPJ Web of Conferences
Subtitle of host publicationPowders and Grains 2017 – 8th International Conference on Micromechanics on Granular Media
EditorsFarhang Radjai, Saeid Nezamabadi, Stefan Luding, Jean-Yves Delenne
Place of PublicationLes Ulis France
PublisherEDP Sciences
Number of pages6
Volume140
DOIs
Publication statusPublished - 30 Jun 2017
EventPowders and Grains 2017 - Montpellier, France
Duration: 3 Jul 20177 Jul 2017
Conference number: 8th
http://pg2017.org/en/

Publication series

NameEPJ Web of Conferences
PublisherEDP Sciences
Volume140
ISSN (Print)2101-6275
ISSN (Electronic)2100-014X

Conference

ConferencePowders and Grains 2017
CountryFrance
CityMontpellier
Period3/07/177/07/17
Internet address

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