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All Outputs (33)

Revisiting the particle size effects in centrifuge modelling (2016)
Presentation / Conference Contribution
Nadimi, S., Fonseca, J., Taylor, R. N., & Barreto, D. (2016, June). Revisiting the particle size effects in centrifuge modelling. Presented at The 3rd European Conference on Physical Modelling in Geotechnics, Nantes, France

Geotechnical centrifuge modelling provides an opportunity to examine novel and complex events in a well-controlled and repeatable environment. While grain interaction and contact dynamics are considered in centrifuge modelling, the soil is treated as... Read More about Revisiting the particle size effects in centrifuge modelling.

Micromechanical insight into the undrained instability of granular materials: deformation characteristics of geomaterials. (2015)
Presentation / Conference Contribution
Barreto, D., Prada-Sarmiento, L. F., & Ramos-Cañón, A. M. (2015, November). Micromechanical insight into the undrained instability of granular materials: deformation characteristics of geomaterials. Presented at 6th International Symposium on Deformation Characteristics of Geomaterials

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 pressure given a prescribed small input of some of the same variables defines a... Read More about Micromechanical insight into the undrained instability of granular materials: deformation characteristics of geomaterials..

An overview of research activities and achievement in Geotechnics from the Scottish Universities Geotechnics Network (SUGN) (2015)
Presentation / Conference Contribution
Leung, A., Anastasopoulos, I. X., Augarde, C. E., Barreto, D., Brennan, A. J., Brown, M. J. Z., Connolly, D., Coombs, W. M., Davies, T., Gao, Z., Ivanovic, A., Kenny, M., Knappett, J. A., Lombardi, D., McDougall, J., Medero, G., Muir Wood, D., El Mountassir, G., Osman, A. S., Pytharouli, S., …Zielinski, M. (2015, September). An overview of research activities and achievement in Geotechnics from the Scottish Universities Geotechnics Network (SUGN). Presented at 16th European Conference on Soil Mechanics and Geotechnical Engineering, Edinburgh

Design of geotechnical systems is often challenging as it requires the understanding of complex soil behaviour and its influence on field-scale performance of geo-structures. To advance the scientific knowledge and the technological development in ge... Read More about An overview of research activities and achievement in Geotechnics from the Scottish Universities Geotechnics Network (SUGN).

Effect of particle loss on soil behaviour. (2012)
Presentation / Conference Contribution
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 particle sizes under different confining pressures. The mass loss
process... Read More about Effect of particle loss on soil behaviour..

The use of electronic voting systems to enhance deep learning. (2012)
Presentation / Conference Contribution
Barreto, D. (2012, July). The use of electronic voting systems to enhance deep learning

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 development and to analyse
its effectiveness. The effectiveness of the m... Read More about The use of electronic voting systems to enhance deep learning..

Using DEM for the assessment of K0 in soils. (2011)
Presentation / Conference Contribution
Barreto, D. (2011). Using DEM for the assessment of K0 in soils. In Discrete Element Methods – Simulations of Discontinua: Theory and Applications - proceedings of the fifth international conference on discrete element methods (440-445)

Exploring the effects of stress history on the drained and undrained cyclic behaviour of granular materials. (2011)
Presentation / Conference Contribution
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)

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 effects of depositional history and consolidation stress history on the stress-... Read More about Exploring the effects of stress history on the drained and undrained cyclic behaviour of granular materials..

Quantifying the Evolution of Soil Fabric Under Different Stress Paths (2009)
Presentation / Conference Contribution
Barreto, D., O’Sullivan, C., & Zdravkovic, L. (2009, July). Quantifying the Evolution of Soil Fabric Under Different Stress Paths. Presented at AIP Conference Proceedings

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 an anisotropy of the material itself. This anisotropy can be quantified usi... Read More about Quantifying the Evolution of Soil Fabric Under Different Stress Paths.

Specimen generation approaches for DEM simulations. (2008)
Presentation / Conference Contribution
O'Sullivan, C., Barreto, D., & Zdravkovic, L. (2008, September). Specimen generation approaches for DEM simulations

Discrete Element Method (DEM) simulations ofelement tests cam provide significant insight into the micro-mechanics of soil response. It is well established that soil behaviour is strongly dependant on the initial density. Generation of particulate as... Read More about Specimen generation approaches for DEM simulations..

Evolution of soil fabric and its interpretation using different methods. (2008)
Presentation / Conference Contribution
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

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-dimensional periodic cell are used for the analysis of these methods. The links be... Read More about Evolution of soil fabric and its interpretation using different methods..

DEM simulations of granular materials involving principal stress rotation. (2008)
Presentation / Conference Contribution
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

No abstract available.