Numerical investigation of spatial distribution of deformation in granular media

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The change in the microstructure of granular materials under a biaxial loading condition was investigated by numerically simulating an idealized assembly of two-dimensional particles. The distinct element method was employed for simulating an idealized assembly. Local strain increments were calculated from relative displacements of particles within triangle elements which were defi ned by particle centers. The obtained local strain increment was analyzed from spatial statistical point of view. The coeffi cient of spatial autocorrelation of the local strain increment distribution was calculated to estimate the intensity of spatial dependence of the local strains in the entire area of the specimen. The spatial analysis results indicate that the range of autocorrelation designating the range of the presence of spatial autocorrelation increased during the biaxial compression loading. This variation of the range of autocorrelation implies that the spatial microstructure of granular materials varies throughout deformation processes.

Original languageEnglish
Title of host publicationComputer Methods for Geomechanics
Subtitle of host publicationFrontiers and New Applications
Pages381-386
Number of pages6
Publication statusPublished - 2011 Dec 1
Event13th International Conference of the International Association for Computer Methods and Advances in Geomechanics, IACMAG 2011 - Melbourne, VIC, Australia
Duration: 2011 May 92011 May 11

Publication series

NameComputer Methods for Geomechanics: Frontiers and New Applications
Volume1

Conference

Conference13th International Conference of the International Association for Computer Methods and Advances in Geomechanics, IACMAG 2011
CountryAustralia
CityMelbourne, VIC
Period11/5/911/5/11

ASJC Scopus subject areas

  • Computational Theory and Mathematics
  • Geochemistry and Petrology

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  • Cite this

    Namikawa, T. (2011). Numerical investigation of spatial distribution of deformation in granular media. In Computer Methods for Geomechanics: Frontiers and New Applications (pp. 381-386). (Computer Methods for Geomechanics: Frontiers and New Applications; Vol. 1).