Outputs (15)

Overcoming volumetric locking in material point methods (2018)
Journal Article
Coombs, W., Charlton, T., Cortis, M., & Augarde, C. (2018). Overcoming volumetric locking in material point methods. Computer Methods in Applied Mechanics and Engineering, 333, 1-21. https://doi.org/10.1016/j.cma.2018.01.010

Material point methods suffer from volumetric locking when modelling near incompressible materials due to the combination of a low-order computational mesh and large numbers of material points per element. Large numbers of material points per element... Read More about Overcoming volumetric locking in material point methods.

Comparison of implicit and explicit methods for non-ordinary state-based peridynamics for quasi-static problems (2018)
Presentation / Conference Contribution
Hashim, A., Coombs, W., Hattori, G., & Augarde, C. (2018). Comparison of implicit and explicit methods for non-ordinary state-based peridynamics for quasi-static problems.

Boundary representation and boundary condition imposition in the material point method (2017)
Presentation / Conference Contribution
Bing, Y., Cortis, M., Charlton, T., Coombs, W., & Augarde, C. (2017). Boundary representation and boundary condition imposition in the material point method. In A. Faramarzi, & S. Dirar (Eds.),

Improvement of seabed cable plough tow force prediction models (2017)
Presentation / Conference Contribution
Robinson, S., Brown, M., Brennan, A., Cortis, M., Augarde, C., & Coombs, W. (2017). Improvement of seabed cable plough tow force prediction models. In Offshore site investigation and geotechnics : integrated geotechnologies - present and future. Proceedings of the 8th international conference, held 12–14 September 2017 at the Royal Geographical Society, London (914-921)

As the use of offshore renewable energy sources such as wind and wave energy systems expands, they represent an increasing portion of the energy mix. Subsea cables connecting these resources are subject to many hazards, making cable burial using cabl... Read More about Improvement of seabed cable plough tow force prediction models.

Imposition of essential boundary conditions in the material point method (2017)
Journal Article
Cortis, M., Coombs, W., Augarde, C., Brown, M., Brennan, A., & Robinson, S. (2018). Imposition of essential boundary conditions in the material point method. International Journal for Numerical Methods in Engineering, 113(1), 130-152. https://doi.org/10.1002/nme.5606

There is increasing interest in the Material Point Method (MPM) as a means of modelling solid mechanics problems in which very large deformations occur, e.g. in the study of landslides and metal forming, however some aspects vital to wider use of the... Read More about Imposition of essential boundary conditions in the material point method.

The modelling of soil-tool interaction using the material point method (2017)
Presentation / Conference Contribution
Cortis, M., Coombs, W. M., Augarde, C. E., Robinson, S., Brennan, A., & Brown, M. (2017). The modelling of soil-tool interaction using the material point method. In A. Faramarzi, & S. Dirar (Eds.), Proceedings of the 25th Conference on Computational Mechanics (UKACM 2017) : 11th – 13th April 2017, School of Engineering, University of Birmingham, Birmingham, UK (211-214)

The material point method (MPM) is a numerical tool able to model very large deformations in solid mechanics such as geotechnical problems. To date, soil-tool interaction modelling in the MPM is somewhat difficult, especially when the tool position i... Read More about The modelling of soil-tool interaction using the material point method.

An implicit implementation of non-ordinary state-based peridynamics (2017)
Presentation / Conference Contribution
Hashim, N., Coombs, W., Hattori, G., & Augarde, C. (2017). An implicit implementation of non-ordinary state-based peridynamics. In A. Faramarzi, & S. Dirar (Eds.), Proceedings of the 25th Conference on Computational Mechanics (UKACM 2017) : 11th – 13th April 2017, School of Engineering, University of Birmingham, Birmingham, UK (134-137)

Peridynamics is a non-local continuum theory that was introduced by Silling. Its key advantage is its use of integral equation forms of the underlying physics, as compared to the partial differential equations in, say the finite element method and th... Read More about An implicit implementation of non-ordinary state-based peridynamics.

Energy dissipation in granular materials in triaxial tests (2017)
Presentation / Conference Contribution
Mukwiri, R., Ghaffari Motlagh, Y., Coombs, W., & Augarde, C. (2017). Energy dissipation in granular materials in triaxial tests. In A. Faramarzi, & S. Dirar (Eds.), Proceedings of the 25th Conference on Computational Mechanics (UKACM 2017) : 11th – 13th April 2017, School of Engineering, University of Birmingham, Birmingham, UK (191-194)

The triaxial test is used in a laboratory to investigate the behaviour of geotechnical materials (e.g. clays and sands). The difficulty in measuring some properties of granular media such as energy changes throughout the test have motivated the curre... Read More about Energy dissipation in granular materials in triaxial tests.

Modelling seabed ploughing using the material point method (2017)
Presentation / Conference Contribution
Cortis, M., Coombs, W., Augarde, C., Robinson, S., Brown, M., & Brennan, A. (2017). Modelling seabed ploughing using the material point method. In A. Rohe, K. Soga, H. Teunissen, & B. Z. Coelho (Eds.), . https://doi.org/10.1016/j.proeng.2017.01.002

Ploughing of the seabed is needed for the installation of cables and pipelines and is an area of construction likely to increase given plans in the UK and elsewhere for offshore marine energy (wind and tidal). Seabed ploughing is an expensive and som... Read More about Modelling seabed ploughing using the material point method.

Development of low cost 3D soil surface scanning for physical modelling (2016)
Presentation / Conference Contribution
Robinson, S., Brown, M. J., Brennan, A. J., Cortis, M., Augarde, C. E., & Coombs, W. M. (2016). Development of low cost 3D soil surface scanning for physical modelling.

Improving seabed cable plough performance for offshore renewable energy (2016)
Presentation / Conference Contribution
Robinson, S., Brown, M., Brennan, A., Cortis, M., Augarde, C., & Coombs, W. (2016). Improving seabed cable plough performance for offshore renewable energy. In C. Guedes Soares, (Ed.), Progress in renewable energies offshore : proceedings of the 2nd International Conference on Renewable Energies Offshore (RENEW2016), Lisbon, Portugal, 24-26 October 2016 (1-7). https://doi.org/10.1201/9781315229256

Seabed ploughing plays an important part in providing protection to subsea cables that connect offshore renewables, and the process represents a significant portion of the overall installation cost. Current models for predicting the required tow forc... Read More about Improving seabed cable plough performance for offshore renewable energy.

Implicit essential boundaries in the Material Point Method (2016)
Presentation / Conference Contribution
Cortis, M., Coombs, W., & Augarde, C. (2016). Implicit essential boundaries in the Material Point Method. In Proceedings of the 24th UK Conference of the Association for Computational Mechanics in Engineering, 31 March - 01 April 2016, Cardiff University, Cardiff (116-119)

The Material Point Method (MPM) is a numerical boundary value problem (BVP) solver developed from particle- in-cell (PIC) methods that discretises the continuum into a set of material points. Information at these material points is mapped to a backgr... Read More about Implicit essential boundaries in the Material Point Method.

Energy dissipation in granular material under 1D compression (2016)
Presentation / Conference Contribution
Mukwiri, R., Ghaffari Motlagh, Y., Coombs, W., & Augarde, C. (2016). Energy dissipation in granular material under 1D compression. In Proceedings of the 24th UK Conference of the Association for Computational Mechanics in Engineering, 31 March - 01 April 2016, Cardiff University, Cardiff (231-234)

In recent years it has been shown that the micro-mechanics of one-dimensional normal compression of sands can be modelled in three-dimensions within the discrete element method [7]. The compression is displacement driven such that the top platen of t... Read More about Energy dissipation in granular material under 1D compression.

Numerical simulation of fracking in shale rocks: current state and future approaches (2016)
Journal Article
Hattori, G., Trevelyan, J., Augarde, C., Coombs, W., & Aplin, A. (2017). Numerical simulation of fracking in shale rocks: current state and future approaches. Archives of Computational Methods in Engineering, 24(2), 281-317. https://doi.org/10.1007/s11831-016-9169-0

Extracting gas from shale rocks is one of the current engineering challenges but offers the prospect of cheap gas. Part of the development of an effective engineering solution for shale gas extraction in the future will be the availability of reliabl... Read More about Numerical simulation of fracking in shale rocks: current state and future approaches.

Efficient Calculation of Stress Intensity Factors using a Coupled BEM-SBFEM Algorithm. (2008)
Presentation / Conference Contribution
Bird, G. E., Trevelyan, J., & Augarde, C. E. (2008). Efficient Calculation of Stress Intensity Factors using a Coupled BEM-SBFEM Algorithm. In B. A. Schrefler, & U. Perego (Eds.), 8th World Congress on Computational Mechanics WCCM8. 5th European Congress on Computational Methods in Applied Sciences and Engineering ECCOMAS 2008