Quantifying stress-induced anisotropy using inter-void constrictions
Journal Article
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
In particulate geomechanics it is common to quantify fabric anisotropy using contact and particle orientations. Measurement of void anisotropy is less common, most likely owin...
Effect of particle loss on soil behaviour.
Presentation / Conference
Kelly, D., McDougall, J., & Barreto, D. (2012, August)
Effect of particle loss on soil behaviour. Paper presented at ICSE-6 6th International Conference on Scour and Erosion
Soil particle loss can result in strength and volume reductions which are difficult to predict. This paper investigates the
influence of the removal of fractions of selected p...
The use of electronic voting systems to enhance deep learning.
Conference Proceeding
Barreto, D. (2012)
The use of electronic voting systems to enhance deep learning. In B. McCabe, M. Pantazidou, & D. Phillips (Eds.), Shaking the Foundations of Geo-engineering Education - proceedings of the international conference Shaking the Foundations of Geo-engineering Education (NUI Galway, Ireland, 4-6 July 2012
The present paper introduces a technology-enhanced teaching method that promotes deep learning.
Four stages that correspond to four different student cohorts were used for its...
The influence of inter-particle friction and the intermediate stress ratio on soil response under generalised stress conditions
Journal Article
Barreto, D., & O'Sullivan, C. (2012)
The influence of inter-particle friction and the intermediate stress ratio on soil response under generalised stress conditions. Granular Matter, 14(4), 505-521. https://doi.org/10.1007/s10035-012-0354-z
Previous research studies have used either physical experiments or discrete element method (DEM) simulations to explore, independently, the influence of the coefficient of int...
Exploring the effects of stress history on the drained and undrained cyclic behaviour of granular materials.
Presentation / Conference
Barreto, D. (2011, January)
Exploring the effects of stress history on the drained and undrained cyclic behaviour of granular materials. Paper presented at 5th International Conference on Geotechnical Earthquake Engineering (5-ICEGE), Santiago, Chile
This paper presents the results of 3D DEM simulations of granular materials subject to cyclic loading. While both the drained and undrained conditions are considered, the effe...
Settlement-The Short and the Long of it
Conference Proceeding
McDougall, J. (2011)
Settlement-The Short and the Long of it. In D. Zekkos (Ed.), Geotechnical Characterization, Field Measurement, and Laboratory Testing of Municipal Solid Waste, (76-111). https://doi.org/10.1061/41146%28395%293
Total settlement in municipal solid waste (MSW) landfills can be considerable, from 25% to 50% of original fill thickness (Bjarngard and Edgers, 1990). Some occurs very quickl...
Quantifying the Evolution of Soil Fabric Under Different Stress Paths
Conference Proceeding
Barreto, D., O’Sullivan, C., & Zdravkovic, L. (2009)
Quantifying the Evolution of Soil Fabric Under Different Stress Paths. In POWDERS AND GRAINS 2009: PROCEEDINGS OF THE 6TH INTERNATIONAL CONFERENCE ON MICROMECHANICS OF GRANULAR MEDIA (181-184). https://doi.org/10.1063/1.3179881
It is well recognized that the macro-scale response of soils is anisotropic in terms of strength, stiffness, permeability, etc. The source of this anisotropy is thought to be ...
Radial periodic boundaries for axi-symmetric DEM simulations: development, implementation and validation.
Presentation / Conference
O'Sullivan, C., Cui, L., & Barreto, D. (2009, November)
Radial periodic boundaries for axi-symmetric DEM simulations: development, implementation and validation. Paper presented at International Conference on Particle-Based Methods: Particles, Barcelona, Spain
No abstract available.
Evolution of soil fabric and its interpretation using different methods.
Presentation / Conference
Barreto, D. (2008, June)
Evolution of soil fabric and its interpretation using different methods. Paper presented at British Geotechnical Association (BGA) Young Geotechnical Engineers' Symposium, UCL, London
Different methods to study the evolution of fabric anisotropy are presented. DEM simulations on assemblies of spheres subjected to different stress paths using a three-dimensi...
DEM simulations of granular materials involving principal stress rotation.
Presentation / Conference
Barreto, D., O'Sullivan, C., & Zdravkovic, L. (2008, May)
DEM simulations of granular materials involving principal stress rotation. Paper presented at Inaugural International Conference of the Engineering Mechanics Institute - EM'08, Minneapolis, USA
No abstract available.