Use of DEM and elastic stability analysis to explain the influence of the intermediate principal stress on shear strength
Journal Article
O'Sullivan, C., Wadee, M., Hanley, K., & Barreto, D. (2013)
Use of DEM and elastic stability analysis to explain the influence of the intermediate principal stress on shear strength. Géotechnique, 63(15), 1298-1309. https://doi.org/10.1680/geot.12.p.153
One interesting aspect of soil response is the sensitivity of the mechanical behaviour to the intermediate principal stress. In this study, a fundamental mechanism that explai...
Particle loss and volume change on dissolution: experimental results and analysis of particle size and amount effects
Journal Article
McDougall, J., Kelly, D., & Barreto, D. (2013)
Particle loss and volume change on dissolution: experimental results and analysis of particle size and amount effects. Acta geotechnica, 8(6), 619-627. https://doi.org/10.1007/s11440-013-0212-0
Soil particles may be lost through dissolution, degradation or erosion. Regardless of the process of loss, there follows a change in soil structure both in terms of phase comp...
Micromechanical insight into the undrained instability of granular materials: deformation characteristics of geomaterials.
Conference Proceeding
Barreto, D., Prada-Sarmiento, L. F., & Ramos-Cañón, A. M. (2015)
Micromechanical insight into the undrained instability of granular materials: deformation characteristics of geomaterials. In V. A. Rinaldi, M. E. Zeballos, & J. J. Clariá (Eds.), Deformation Characteristics of Geomaterials, 655-662. doi:10.3233/978-1-61499-601-9-655
There is no agreement between experimental researchers whether the point where a granular material responds with a large change of stresses, strains or excess pore water press...
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.
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...
Volumetric consequences of particle loss by grading entropy
Journal Article
McDougall, J., Imre, E., Barreto, D., & Kelly, D. (2013)
Volumetric consequences of particle loss by grading entropy. Géotechnique, 63(3), 262-266. https://doi.org/10.1680/geot.sip13.t.002
Chemical and biological processes, such as dissolution in gypsiferous sands and biodegradation in waste refuse, result in mass or particle loss, which in turn lead to changes ...
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...
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...
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...