Fine tuning DEM simulations to perform virtual experiments with three-dimensional granular packings

Gary W. Delaney, Shio Inagaki, Tomaso Aste

Research output: Chapter in Book/Report/Conference proceedingChapter

9 Citations (Scopus)

Abstract

We describe the development of a Discrete Element Method (DEM) numerical simulation for granular systems. Starting from the 3-dimensional images of grain packs obtained by X-ray computed tomography we perform “virtual experiments” by reconstructing via DEM numerical samples of ideal spherical beads with desired (and tunable) properties. The resulting virtual packing has a structure that is almost identical to the experimental one. However, from these numerical samples we can calculate several static and dynamical properties (force network, avalanches precursors, stress paths, stability, fragility, ) which are otherwise not experimentally accessible. The simulations realistically take into account non-linear Hertzian repulsion, non-elastic collisions, viscous damping, gravity and friction.

Original languageEnglish
Title of host publicationGranular And Complex Materials
PublisherWorld Scientific Publishing Co.
Pages169-185
Number of pages17
ISBN (Electronic)9789812771995
DOIs
Publication statusPublished - Jan 1 2007
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Materials Science(all)

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