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Outputs (107)

An open-source Julia code for geotechnical MPM (2023)
Presentation / Conference Contribution
Gavin, N., Bird, R. E., Coombs, W. M., & Augarde, C. E. (2023, June). An open-source Julia code for geotechnical MPM. Presented at 10th European Conference on Numerical Methods in Geotechnical Engineering, London

There is considerable interest in the Material Point Method (MPM) in the computational geotechnics community since it can model problems involving large deformations, e.g. landslides, collapses etc. without being too far from the standard finite elem... Read More about An open-source Julia code for geotechnical MPM.

Cone Penetration Tests (CPTs) in layered soils: a Material Point approach (2023)
Presentation / Conference Contribution
Bird, R., Coombs, W., Augarde, C., Brown, M., Sharif, Y., Carter, G., Johnson, K., & Macdonald, C. (2023, June). Cone Penetration Tests (CPTs) in layered soils: a Material Point approach. Presented at 10th European Conference on Numerical Methods in Geotechnical Engineering, London

Cone Penetration Tests (CPTs) can be used to determine in-situ soil properties and represent a practical choice for site investigation offshore, especially for linear infrastructure, such as offshore wind export cables. Information gained from CPTs i... Read More about Cone Penetration Tests (CPTs) in layered soils: a Material Point approach.

On the development of a material point method compatible arc length solver for large deformation solid mechanics (2023)
Presentation / Conference Contribution
Gavin, N., Coombs, W., Brigham, J., & Augarde, C. (2023, April). On the development of a material point method compatible arc length solver for large deformation solid mechanics. Presented at UKACM 2023, Coventry, UK

The Material Point Method is a versatile technique, however, it may be unable to provide a valid solution if there is a snap-through or snap-back response in the equilibrium path. One approach of overcoming this issue is the use of path following tec... Read More about On the development of a material point method compatible arc length solver for large deformation solid mechanics.

A geometrically-exact Finite Element Method for micropolar continua with finite deformations (2023)
Presentation / Conference Contribution
O'Hare, T. J., Gourgiotis, P. A., Coombs, W. M., & Augarde, C. E. (2023, April). A geometrically-exact Finite Element Method for micropolar continua with finite deformations. Paper presented at UKACM 2023, University of Warwick, Coventry, UK

Micropolar theory is a weakly non-local higher-order continuum theory based on the inclusion of independent (micro-)rotational degrees of freedom. Subsequent introduction of couple-stresses and an internal length scale mean the micropolar continuum i... Read More about A geometrically-exact Finite Element Method for micropolar continua with finite deformations.

A review of drag anchor penetration models to inform cable burial risk assessment (2022)
Presentation / Conference Contribution
Pretti, G., Coombs, W., Augarde, C., Puigvert, M., Gutierrez, J., & Cross, L. (2022, August). A review of drag anchor penetration models to inform cable burial risk assessment. Paper presented at 4th International Symposium on Frontiers in Offshore Geotechnics (ISFOG), Austin, Texas

MRI to MPM: Developing a Patient-specific Material Point Method Model of the Human Heart (2022)
Presentation / Conference Contribution
Gavin, N., Coombs, W., Brigham, J., & Augarde, C. (2022, April). MRI to MPM: Developing a Patient-specific Material Point Method Model of the Human Heart. Paper presented at UKACM 2022, Nottingham, UK

The heart is an important organ in the human body and has been widely studied using Finite Element Analysis techniques which often require extremely fine meshes in order to obtain accurate results. Also, large deformations are typically seen in heart... Read More about MRI to MPM: Developing a Patient-specific Material Point Method Model of the Human Heart.

The Virtual Element Method for Engineers (2022)
Presentation / Conference Contribution
O'Hare, T., & Augarde, C. (2022, April). The Virtual Element Method for Engineers. Paper presented at UKACM 2022, Nottingham, England

The virtual element method (VEM) is a relatively new technique, similar to the finite element method (FEM), but having no restriction on the number of element sides. This has numerous advantages, particularly regarding greater meshing flexibility, ho... Read More about The Virtual Element Method for Engineers.

A comparison of approaches for modelling poro-mechanics in the Material Point Method (2022)
Presentation / Conference Contribution
Pretti, G., Coombs, W., & Augarde, C. (2022, April). A comparison of approaches for modelling poro-mechanics in the Material Point Method. Paper presented at UKACM 2022, Nottingham, UK

When it comes to the analysis of fully saturated porous materials, a plethora of formulations [1] are available in the literature. Among them, the so-called u − p formulation constitutes a well-established approach when low-frequency problems are con... Read More about A comparison of approaches for modelling poro-mechanics in the Material Point Method.

Overcoming Volumetric Locking in Three-Dimensional Material Point Analysis (2021)
Presentation / Conference Contribution
Coombs, W., Wang, L., & Augarde, C. (2021, May). Overcoming Volumetric Locking in Three-Dimensional Material Point Analysis. Presented at IACMAG 2021

The material point method is ideally suited to modelling large deformation problems in three dimensions, especially in cases where the finite element method struggles due to mesh distortion. However, when the method is used to analyse problems with n... Read More about Overcoming Volumetric Locking in Three-Dimensional Material Point Analysis.

Geotechnical characterisation of recycled biopolymer-stabilised earthen materials (2019)
Presentation / Conference Contribution
Muguda, S., Hughes, P., Augarde, C., Perlot, C., Bruno, A., & Gallipoli, D. (2019, December). Geotechnical characterisation of recycled biopolymer-stabilised earthen materials. Presented at The XVII European Conference on Soil Mechanics and Geotechnical Engineering, Reykjavik Iceland

Earthen structures (i.e. structural units manufactured from soil) are often regarded as sustainable forms of construction due to their characteristically low carbon footprint. Unstabilised earthen materials can easily be recycled or disposed, however... Read More about Geotechnical characterisation of recycled biopolymer-stabilised earthen materials.

AMPLE: A Material Point Learning Environment (2019)
Presentation / Conference Contribution
Coombs, W., Augarde, C., Bing, Y., Charlton, T., Cortis, M., Ghaffari Motlagh, Y., & Wang, L. (2019, December). AMPLE: A Material Point Learning Environment. Paper presented at Second International Conference on the Material Point Method for Modelling Soil-Water-Structure Interaction, Cambridge, UK

Advances in the Use of Biological Stabilisers and Hyper-compaction for Sustainable Earthen Construction Materials (2019)
Presentation / Conference Contribution
Muguda, S., Lucas, G., Hughes, P., Augarde, C., Cuccurullo, A., Bruno, A. W., Perlot, C., & Gallipoli, D. (2018, December). Advances in the Use of Biological Stabilisers and Hyper-compaction for Sustainable Earthen Construction Materials. Presented at International Symposium on Earthen Structures 2018 (ISES2018), Bangalore, India

In the majority of cases, earthen construction materials for real buildings require amendment to deliver suitable material properties, which could be some additional strength or resilience to erosion. In modern earthen construction, in India, Austral... Read More about Advances in the Use of Biological Stabilisers and Hyper-compaction for Sustainable Earthen Construction Materials.

On the issues associated with applying traditional Lagrangian mechanics to the material point method (2019)
Presentation / Conference Contribution
Coombs, W., Augarde, C., Brennan, A., Brown, M., Charlton, T., Knappett, J., Ghaffari Motlagh, Y., & Wang, L. (2019, December). On the issues associated with applying traditional Lagrangian mechanics to the material point method. Presented at Second International Conference on the Material Point Method for Modelling Soil-Water-Structure Interaction, Cambridge, United Kingdom

On Implementation Aspects of Implicit MPM for 3D Analysis (2019)
Presentation / Conference Contribution
Wang, L., Cortis, M., Coombs, W., Augarde, C., Brown, M., Knappett, J., Brennan, A., Davidson, C., Richards, D., & Blake, A. (2019, December). On Implementation Aspects of Implicit MPM for 3D Analysis. Presented at Second International Conference on the Material Point Method for Modelling Soil-Water-Structure Interaction, Cambridge, United Kingdom

Direct observation of stress relaxation process in 4H-SiC homoepitaxial layers via in-situ synchrotron X-ray topography (2018)
Presentation / Conference Contribution
Guo, J., Yang, Y., Raghothamachar, B., Dudley, M., Welt, S., Danilewsky, A., McNally, P., & Tanner, B. (2018, December). Direct observation of stress relaxation process in 4H-SiC homoepitaxial layers via in-situ synchrotron X-ray topography. Presented at 2017 International Conference on Silicon Carbide and Related Materials, Washington DC

Preliminary study on use of biopolymers in earthen construction (2018)
Presentation / Conference Contribution
Muguda, S., Booth, S., Hughes, P., Augarde, C., Perlot, C., Bruno, A., & Gallipoli, D. (2018, August). Preliminary study on use of biopolymers in earthen construction. Presented at 7th International Conference on Unsaturated Soils, Hong Kong, China

Biopolymers are known to achieve significant soil stabilisation when working with small quan-tities. There have been studies understanding their effects on permeability, strength, compressibility and dura-bility, however, there are few studies explor... Read More about Preliminary study on use of biopolymers in earthen construction.

The effect of ambient humidity on the stiffness and strength of a hyper-compacted silty clay for earth building (2018)
Presentation / Conference Contribution
Cuccurullo, A., Gallipoli, D., Bruno, A., La Borderie, C., Augarde, C., & Hughes, P. (2018, August). The effect of ambient humidity on the stiffness and strength of a hyper-compacted silty clay for earth building. Presented at 7th International Conference on Unsaturated Soils, Hong Kong, China

The effect of pore suction and water content on the engineering properties of partially saturated soils has been extensively studied by geotechnical researchers. It is well known that unsaturated soils become stiffer, stronger and less permeable as s... Read More about The effect of ambient humidity on the stiffness and strength of a hyper-compacted silty clay for earth building.

On the Use of Advanced Material Point Methods for Problems Involving Large Rotational Deformation (2018)
Presentation / Conference Contribution
Wang, L., Coombs, W., & Augarde, C. (2018, July). On the Use of Advanced Material Point Methods for Problems Involving Large Rotational Deformation. Paper presented at 13th World Congress on Computational Mechanics / 2nd Pan American Congress on Computational Mechanics (WCCM 2018), New York, USA

The Material Point Method (MPM) is a quasi Eulerian-Lagrangian approach to solve solid mechanics problems involving large deformations. The standard MPM discretises the physical domain using material points which are advected through a standard finit... Read More about On the Use of Advanced Material Point Methods for Problems Involving Large Rotational Deformation.