Discovering community structures and dynamical networks from grain-scale kinematics of shear bands in sand

David M. Walker, A. Tordesillas, A. Rechenmacher, A. Abedi

Research output: Chapter in Book/Conference paperConference paperpeer-review

3 Citations (Scopus)

Abstract

The quest to understand the connections between the triumvirate of
structure, dynamics and function continues to drive the forefront of research in
Complex Systems. Crucial to these explorations is the development of graphtheoretic
techniques that: (i) can detect communities and associated boundaries in
the underlying network or graph, which represents the interactions of constituent
units, and (ii) quantify shortest paths and related network measures within this
graph. We report on a new study using data from high resolution digital image
correlation (DIC) measurements of grain-scale kinematics in sand under shear.
Preliminary results show that the nodes of the network in the shear band region
exhibit high closeness centrality – a network measure of how efficient a given node
is in spreading information to all the other nodes in the graph. It is thus reasonable
to expect that the most efficient routes for spread of kinematical information within
this network are those from nodes that correspond to the grid points that lie
along the shear band. We believe these studies will ultimately lead to an improved
understanding of self-organization, the nature of energy flow and dynamics in the
critical state regime in the presence of persistent shear bands.
Original languageEnglish
Title of host publicationAdvances in Bifurcation and Degradation in Geomaterials: Proceedings of the 9th International Workshop on Bifurcation and Degradation in Geomaterials
EditorsStephane Bonelli, Cristian Dascalu, Francois Nicot
Place of PublicationNetherlands
PublisherSpringer
Pages67-73
Number of pages7
Volume1
ISBN (Electronic)9789400714212
ISBN (Print)9789400714205
DOIs
Publication statusPublished - 2011
Externally publishedYes
EventThe 9th International Workshop on Bifurcation and Degradation in Geomaterials - Porquerolles, France
Duration: 23 May 201126 May 2011

Publication series

NameSpringer Series in Geomechanics and Geoengineering
PublisherSpringer
Volume11
ISSN (Print)1866-8755
ISSN (Electronic)1866-8763

Conference

ConferenceThe 9th International Workshop on Bifurcation and Degradation in Geomaterials
Period23/05/1126/05/11

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