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Granular Dynamics, Contact Mechanics and Particle System Simulations

A DEM study

  • Colin┬áThornton

Part of the Particle Technology Series book series (POTS, volume 24)

Table of contents

  1. Front Matter
    Pages i-xiii
  2. Colin Thornton
    Pages 1-11
  3. Colin Thornton
    Pages 13-25
  4. Colin Thornton
    Pages 27-55
  5. Colin Thornton
    Pages 57-69
  6. Colin Thornton
    Pages 71-91
  7. Colin Thornton
    Pages 93-121
  8. Colin Thornton
    Pages 123-145
  9. Colin Thornton
    Pages 147-195

About this book

Introduction

This book is devoted to the Discrete Element Method (DEM) technique, a discontinuum modelling approach that takes into account the fact that granular materials are composed of discrete particles which interact with each other at the microscale level. This numerical simulation technique can be used both for dispersed systems in which the particle-particle interactions are collisional and compact systems of particles with multiple enduring contacts.

The book provides an extensive and detailed explanation of the theoretical background of DEM. Contact mechanics theories for elastic, elastic-plastic, adhesive elastic and adhesive elastic-plastic particle-particle interactions are presented. Other contact force models are also discussed, including corrections to some of these models as described in the literature, and important areas of further research are identified.

A key issue in DEM simulations is whether or not a code can reliably simulate the simplest of systems, namely the single particle oblique impact with a wall. This is discussed using the output obtained from the contact force models described earlier, which are compared for elastic and inelastic collisions. In addition, further insight is provided for the impact of adhesive particles. The author then moves on to provide the results of selected DEM applications to agglomerate impacts, fluidised beds and quasi-static deformation, demonstrating that the DEM technique can be used (i) to mimic experiments, (ii) explore parameter sweeps, including limiting values, or (iii) identify new, previously unknown, phenomena at the microscale.

In the DEM applications the emphasis is on discovering new information that enhances our rational understanding of particle systems, which may be more significant than developing a new continuum model that encompasses all microstructural aspects, which would most likely prove too complicated for practical implementation. The book will be of interest to academic and industrial researchers working in particle technology/process engineering and geomechanics, both experimentalists and theoreticians.

Keywords

Agglomerate breakage Contact force models Fluidized Beds Granular Flows Granular matter simulations Microstructural anisotropy Particle system simulations Particulate media and systems Quasi-static deformation The essential text on the Discrete Element Method DEM Theory and applications of DEM Viscous liquid bridges

Authors and affiliations

  • Colin┬áThornton
    • 1
  1. 1.School of Chemical EngineeringUniversity of BirminghamBirminghamUnited Kingdom

Bibliographic information

  • DOI https://doi.org/10.1007/978-3-319-18711-2
  • Copyright Information Springer International Publishing Switzerland 2015
  • Publisher Name Springer, Cham
  • eBook Packages Physics and Astronomy
  • Print ISBN 978-3-319-18710-5
  • Online ISBN 978-3-319-18711-2
  • Series Print ISSN 1567-827X
  • Buy this book on publisher's site
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