The influence of inter-particle friction and the intermediate stress ratio on soil response under generalised stress conditions
By Daniel Barreto, Catherine O'Sullivan. Granular Matter, 2012
203 citations recorded by the source corpus.
Previous research studies have used either physical experiments or discrete element method (DEM) simulations to explore, independently, the influence of the coefficient of inter-particle friction (μ) and the intermediate stress ratio (b) on the behaviour of granular materials. DEM simulations and experiments using photoelasticity have shown that when an anisotropic stress condition is applied to a granular material, strong force chains or columns of contacting particles transmitting relatively large forces, form parallel to the major principal stress orientation. The combined effects of friction and the intermediate stress ratio upon the resistance of these strong force chains to collapse (buckling failure) are considered here using data from an extensive set of DEM simulations including triaxial and true triaxial compression tests. For all tests both μ and b affected the macro- and micro-scale response, however the mechanisms whereby the force chain stability was improved differ. While friction clearly enhances the inherent stability of the strong force chains, the intermediate stress ratio affects the contact density and distribution of orthogonal contacts that provide lateral support to the force chains.
Subfields: Civil and Structural Engineering, Computational Mechanics, Mechanics of Materials
View Paper: https://www.semanticscholar.org/paper/c6a5c642b801115c3424a91d6dd5b4870f638620
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In Civil and Structural Engineering
In Computational Mechanics
In Mechanics of Materials
Citations in the corpus
- Exploring the influence of interparticle friction on critical state behaviour using DEM (2014, background): “DOI: 10.1002/nag.2259 Exploring the influence of interparticle friction on critical state behaviour using DEM Xin Huang1,2, Kevin J. Hanley1, Catherine O’Sullivan1,*,† and Chung Yee Kwok2 1Civil and Environmental Engineering, Imperial College London, London SW7 2AZ, UK 2Civil Engineering, University”
- Discrete-element method analysis of the state parameter (2014, methodology): “Prior studies simulating true triaxial element tests (Thornton, 2000; Ng, 2004a, 2004b; Barreto & O’Sullivan, 2012; Zhao & Guo, 2013) have shown that DEM can replicate the failure envelopes proposed for real sands.”
- The signature of shear-induced anisotropy in granular media (2013, background): “, by imposing a constant volume constraint on the sheared sample (see also [56,6]).”