Quantifying stress-induced anisotropy using inter-void constrictions

Shire, Thomas; O'Sullivan, Catherine; Barreto, Daniel; Gaudray, G.

Abstract

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.

Citation

Shire, T., O'Sullivan, C., Barreto, D., & Gaudray, G. (2013). Quantifying stress-induced anisotropy using inter-void constrictions. Géotechnique, 63(1), 85-91. https://doi.org/10.1680/geot.11.t.020

• Journal Article Type: Article
• Publication Date: 2013-01
• Deposit Date: Sep 27, 2012
• Print ISSN: 0016-8505
• Electronic ISSN: 1751-7656
• Publisher: ICE Publishing
• Peer Reviewed: Peer Reviewed
• Volume: 63
• Issue: 1
• Pages: 85-91
• DOI: https://doi.org/10.1680/geot.11.t.020
• Keywords: fabric/structure of soils; discrete-element modelling; anisotropy
• Public URL: http://researchrepository.napier.ac.uk/id/eprint/5672
• Publisher URL: http://dx.doi.org/10.1680/geot.11.T.020