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Advances in tensiometer-based suction control systems (2011)
Presentation / Conference Contribution
Lourenço, S. D. N., Gallipoli, D., Toll, D. G., Augarde, C. E., & Evans, F. D. (2011, September). Advances in tensiometer-based suction control systems. Presented at 5th International Conference on Unsaturated Soils, Barcelona, Spain

Cunningham (2000) and Jotisankasa (2005) pioneered the development of tensiometer-based suction control systems. In these systems, wetting and drying of the soil are achieved by water injection and circulation of air in contact with the specimen whil... Read More about Advances in tensiometer-based suction control systems.

Aspects of the use of orthogonal basis functions in the element-free Galerkin method (2010)
Journal Article
Zhuang, X., & Augarde, C. (2010). Aspects of the use of orthogonal basis functions in the element-free Galerkin method. International Journal for Numerical Methods in Engineering, 81(3), 366-380. https://doi.org/10.1002/nme.2696

The element free Galerkin (EFG) method is probably the most widely used meshless method at present. In the EFG method, shape functions are derived from a moving least squares approximation using a polynomial basis, a calculation involving the inversi... Read More about Aspects of the use of orthogonal basis functions in the element-free Galerkin method.

Advances in meshless methods with application to geotechnics (2010)
Presentation / Conference Contribution
Heaney, C., Augarde, C., Deeks, A., Coombs, W., & Crouch, R. (2010, June). Advances in meshless methods with application to geotechnics. Presented at 7th European Conference on Numerical Methods in Geotechnical Engineering, Trondheim, Norway

Finite element methods are well-established for modelling problems in geotechnics involving elasto-plastic constitutive models. However, meshless methods could offer some advantages for problems involving finite deformations as the mesh entanglement... Read More about Advances in meshless methods with application to geotechnics.

70-line 3D finite deformation elastoplastic finite-element code (2010)
Presentation / Conference Contribution
Coombs, W., Crouch, R., & Augarde, C. (2010, June). 70-line 3D finite deformation elastoplastic finite-element code. Presented at 7th European Conference on Numerical Methods in Geotechnical Engineering (NUMGE), Trondheim, Norway

Few freeware FE programs offer the capabilities to include 3D finite deformation inelastic continuum analysis; those that do are typically expressed in tens of thousands of lines. This paper offers for the first time compact MATLAB scripts forming a... Read More about 70-line 3D finite deformation elastoplastic finite-element code.

A coupled BEM/Scaled Boundary FEM formulation for accurate computations in linear elastic fracture mechanics (2010)
Journal Article
Bird, G., Trevelyan, J., & Augarde, C. (2010). A coupled BEM/Scaled Boundary FEM formulation for accurate computations in linear elastic fracture mechanics. Engineering Analysis with Boundary Elements, 34(6), 599-610. https://doi.org/10.1016/j.enganabound.2010.01.007

Issues relating to the practical implementation of the coupled boundary element–scaled boundary finite element method are addressed in this paper. A detailed approach highlights fully the process of applying boundary conditions, including the treatme... Read More about A coupled BEM/Scaled Boundary FEM formulation for accurate computations in linear elastic fracture mechanics.

Modelling elasto-plasticity using the hybrid MLPG method (2010)
Journal Article
Heaney, C., Augarde, C., & Deeks, A. (2010). Modelling elasto-plasticity using the hybrid MLPG method. Computer Modeling in Engineering & Sciences, 56(2), 153-178

Meshless methods continue to generate strong interest as alternatives to conventional finite element methods. One major area of application as yet relatively unexplored with meshless methods is elasto-plasticity. In this paper we extend a novel numer... Read More about Modelling elasto-plasticity using the hybrid MLPG method.

A new partition of unity finite element free from the linear dependence problem and possessing the delta property (2010)
Journal Article
Cai, Y., Zhuang, X., & Augarde, C. (2010). A new partition of unity finite element free from the linear dependence problem and possessing the delta property. Computer Methods in Applied Mechanics and Engineering, 199(17-20), 1036-1043. https://doi.org/10.1016/j.cma.2009.11.019

Partition-of-unity based finite element methods (PUFEMs) have appealing capabilities for p-adaptivity and local refinement with minimal or even no remeshing of the problem domain. However, PUFEMs suffer from a number of problems that practically limi... Read More about A new partition of unity finite element free from the linear dependence problem and possessing the delta property.

Reuleaux plasticity: analytical backward Euler stress integration and consistent tangent (2010)
Journal Article
Coombs, W., Crouch, R., & Augarde, C. (2010). Reuleaux plasticity: analytical backward Euler stress integration and consistent tangent. Computer Methods in Applied Mechanics and Engineering, 199(25-28), 1733-1743. https://doi.org/10.1016/j.cma.2010.01.017

Analytical backward Euler stress integration is presented for a deviatoric yielding criterion based on a modified Reuleaux triangle. The criterion is applied to a cone model which allows control over the shape of the deviatoric section, independent o... Read More about Reuleaux plasticity: analytical backward Euler stress integration and consistent tangent.

On the necessity for rotational yielding in anisotropic plasticity (2009)
Presentation / Conference Contribution
Coombs, W., Crouch, R., & Augarde, C. (2009, December). On the necessity for rotational yielding in anisotropic plasticity. Presented at 17th UK Conference on Computational Mechanics (ACME), Nottingham, England

Following suggestions by Masın [1], this paper re-examines whether the inelastic irrecoverable deformation of cohesive geomaterials can be adequately captured by Bounding Surface-type plasticity models with isotropic outer-surfaces (such as that prop... Read More about On the necessity for rotational yielding in anisotropic plasticity.

Parallel Hybrid Particle Swarm Optimization and Applications in Geotechnical Engineering (2009)
Book Chapter
Zhang, Y., Gallipoli, D., & Augarde, C. (2009). Parallel Hybrid Particle Swarm Optimization and Applications in Geotechnical Engineering. In Z. Cai, Z. Li, Z. Kang, & Y. Liu (Eds.), Advances in computation and intelligence (466-475). Springer Verlag. https://doi.org/10.1007/978-3-642-04843-2_49

A novel parallel hybrid particle swarm optimization algorithm named hmPSO is presented. The new algorithm combines particle swarm optimization (PSO) with a local search method which aims to accelerate the rate of convergence. The PSO provides initial... Read More about Parallel Hybrid Particle Swarm Optimization and Applications in Geotechnical Engineering.

The strength of unstabilised rammed earth materials (2009)
Journal Article
Jaquin, P., Augarde, C., Gallipoli, D., & Toll, D. (2009). The strength of unstabilised rammed earth materials. Géotechnique, 59(5), 487-490. https://doi.org/10.1680/geot.2007.00129

Rammed earth is a manufactured material comprising sand, gravel and clay, which is compacted between forms to build walls. Primarily a historic method of construction, it is now receiving considerable interest worldwide owing to its zero reliance on... Read More about The strength of unstabilised rammed earth materials.

Simulation-based calibration of geotechnical parameters using parallel hybrid moving boundary particle swarm optimization (2009)
Journal Article
Zhang, Y., Gallipoli, D., & Augarde, C. (2009). Simulation-based calibration of geotechnical parameters using parallel hybrid moving boundary particle swarm optimization. Computers and Geotechnics, 36(4), 604-615. https://doi.org/10.1016/j.compgeo.2008.09.005

Simulation-based optimization methods have been recently proposed for calibrating geotechnical models from laboratory and field tests. In these methods, geotechnical parameters are identified by matching model predictions to experimental data, i.e. b... Read More about Simulation-based calibration of geotechnical parameters using parallel hybrid moving boundary particle swarm optimization.

Unsaturated Soils. Advances in Geo-Engineering, Proceedings of the 1st European Conference, E-UNSAT 2008 (2008)
Book
Toll, D., Augarde, C., Gallipoli, D., & Wheeler, S. (Eds.). (2008). Unsaturated Soils. Advances in Geo-Engineering, Proceedings of the 1st European Conference, E-UNSAT 2008. Taylor and Francis

Unsaturated Soils: Advances in Geo-Engineering comprises 136 contributions from leading international researchers and practitioners, presented at the First European Conference on Unsaturated Soils (Durham, UK, 2-4 July 2008). The papers report on the... Read More about Unsaturated Soils. Advances in Geo-Engineering, Proceedings of the 1st European Conference, E-UNSAT 2008.

Finite element limit analysis of passive earth resistance in cohesionless soils (2008)
Journal Article
Shiau, J., Augarde, C., Lyamin, A., & Sloan, S. (2008). Finite element limit analysis of passive earth resistance in cohesionless soils. Soils and Foundations, 48(6), 843-850

This note examines the classic passive earth resistance of cohesionless soil by using two newly developed numerical procedures based on finite element formulations of the bound theorems of limit analysis and non-linear programming techniques. Solutio... Read More about Finite element limit analysis of passive earth resistance in cohesionless soils.

Calibrations of a high-suction tensiometer (2008)
Journal Article
Lourenço, S., Gallipoli, D., Toll, D., Augarde, C., Evans, F., & Medero, G. (2008). Calibrations of a high-suction tensiometer. Géotechnique, 58(8), 659-668. https://doi.org/10.1680/geot.2008.58.8.659

High-suction tensiometers are able to measure suctions up to 2 MPa. Direct calibration at such high suctions requires the imposition of negative water pressures, which are difficult to achieve using facilities commonly available in soil mechanics lab... Read More about Calibrations of a high-suction tensiometer.

Chronological description of the spatial development of rammed earth techniques (2008)
Journal Article
Jaquin, P., Augarde, C., & Gerrard, C. (2008). Chronological description of the spatial development of rammed earth techniques. International Journal of Architectural Heritage: Conservation, Analysis and Restoration, 2(4), 377-400. https://doi.org/10.1080/15583050801958826

Rammed earth has been used by man for thousands of years and is currently experiencing a revival in some parts of the world as a result of its inherent sustainability. Historic rammed earth structures are scattered around the world, and much informat... Read More about Chronological description of the spatial development of rammed earth techniques.