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 language | English |
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Title of host publication | Granular And Complex Materials |
Publisher | World Scientific Publishing Co. |
Pages | 169-185 |
Number of pages | 17 |
ISBN (Electronic) | 9789812771995 |
DOIs | |
Publication status | Published - Jan 1 2007 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Engineering(all)
- Materials Science(all)