Research Output

Quantifying stress-induced anisotropy using inter-void constrictions.

  In particulate geomechanics it is common to quantify fabric anisotropy using contact and particle orientations. Measurement of void anisotropy is less common, most likely owing to the difficulties associated with defining individual voids. Here a Delaunay tessellation-based approach is applied to
measure anisotropy of the inter-void constriction orientations. This new measure of fabric anisotropy was capable of identifying stress-induced anisotropy in discrete-element modelling true triaxial simulations with spherical particles. A relationship is established between the constriction orientations, the macro-scale principal stress directions and the micro-scale contact normal orientations.

  • Type:


  • Date:

    31 December 2012

  • Publication Status:


  • Publisher

    Thomas Telford for ICE

  • DOI:


  • ISSN:


  • Library of Congress:

    TA Engineering (General). Civil engineering (General)

  • Dewey Decimal Classification:

    624 Civil engineering


Shire, T., O'Sullivan, C., Barreto, D. & Gaudray, G. (2012). Quantifying stress-induced anisotropy using inter-void constrictions. Géotechnique. 63, 85-91. doi:10.1680/geot.11.T.020. ISSN 0016-8505



fabric/structure of soils; discrete-element modelling; anisotropy

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