Modelling cohesive-frictional particulate solids for bulk handling applications

John P. Morrissey*, Subhash C. Thakur, Jin Sun, Jian Fei Chen, Jin Y. Ooi

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract / Description of output

Many powders and particulate solids are cohesive in nature and the strength often exhibits dependence on the consolidation stress. As a result, the stress history in the material leading up to a handling scenario needs to be considered when evaluating its handleability. This paper outlines the development of a DEM contact model accounting for plasticity and adhesion force, which is shown to be suitable for modelling the stress history dependent cohesive strength. The model was used to simulate the confined consolidation and the subsequent unconfined loading of iron ore fines with particle sizes up to 1.18mm. The predicted flow function was found to be comparable to the experimental results.

Original languageEnglish
Title of host publicationParticle-Based Methods II - Fundamentals and Applications
Pages33-42
Number of pages10
Publication statusPublished - 1 Dec 2011
Event2nd International Conference on Particle-Based Methods, PARTICLES 2011 - Barcelona, Spain
Duration: 26 Oct 201128 Oct 2011

Publication series

NameParticle-Based Methods II - Fundamentals and Applications

Conference

Conference2nd International Conference on Particle-Based Methods, PARTICLES 2011
Country/TerritorySpain
CityBarcelona
Period26/10/1128/10/11

Keywords / Materials (for Non-textual outputs)

  • Adhesion
  • Cohesive solid
  • Contact model
  • Discrete element method (DEM)
  • Granular material

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