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David M. Walker : Contact Network Analysis of Granular Media (Feb 16, 2010 2:45 PM)

The particles in a deforming assembly of a granular material continually rearrange themselves when subject to loading. This rearrangement can be usefully represented by an evolving (complex) contact network reflecting the changing connectivity. The tools of complex networks summarize the properties of these contact networks and changes in the physical material manifest in changes to these properties. We consider two different DEM systems, a biaxial compression test and a second system which allows for particle breakage, and discuss how different properties of the contact networks help to reveal different aspects of the materials'response to loading. (Joint work with Antoinette Tordesillas)

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