DEM simulation of comminution: Fragmentation and size distribution

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

2 Scopus citations

Abstract

ESyS-Particle, the 3-D Discrete Element Model, is used to model the fracture process and the size distribution of rock fragmentation under two different loading conditions: 1) Slow uni-axial compression of a ball aggregate which consists of small bonded particles; 2) Impact of a ball consisting of bonded particles to a stiff wall. We reproduce the realistic fracture patterns, such as meridional cracks under slow loading and secondary cracks under fast loading. We observe a transition from damage to fragmentation as impact velocity increases. The latter one is characterized by generation of fines and a power law distribution of fragment sizes.

Original languageEnglish
Title of host publicationPowders and Grains 2009 - Proceedings of the 6th International Conference on Micromechanics of Granular Media
Pages863-866
Number of pages4
DOIs
StatePublished - 2009
Externally publishedYes
Event6th International Conference on Micromechanics of Granular Media, Powders and Grains 2009 - Golden, CO, United States
Duration: 13 Jul 200917 Jul 2009

Publication series

NameAIP Conference Proceedings
Volume1145
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference6th International Conference on Micromechanics of Granular Media, Powders and Grains 2009
Country/TerritoryUnited States
CityGolden, CO
Period13/07/0917/07/09

Keywords

  • Discrete element model
  • Fragmentation
  • Size distribution

ASJC Scopus subject areas

  • General Physics and Astronomy

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