Staff profile

Conference Paper

• Cone penetration tests (CPTs) in bi-phase soils: A material point approach with rigid body interaction
  Bird, R., Pretti, G., Coombs, W. M., Augarde, C. E., Sharif, Y., Brown, M., Carter, G., & Johnson, K. (2023, April). Cone penetration tests (CPTs) in bi-phase soils: A material point approach with rigid body interaction. Paper presented at UK Association for Computational Mechanics 2023 (UKACM 2023), University of Warwick, UK
• Dynamic three-dimensional rigid body interaction with highly deformable solids, a material point approach
  Bird, R., Pretti, G., Coombs, W., Augarde, C., Sharif, Y., Brown, M., Carter, G., Macdonald, C., & Johnson, K. (2024, April). Dynamic three-dimensional rigid body interaction with highly deformable solids, a material point approach. Presented at UK Association for Computational Mechanics Conference 2024, Durham, UK
• Immersed traction boundary conditions in phase field fracture modelling
  Sims, B., Bird, R. E., Coombs, W. M., & Giani, S. (2024, April). Immersed traction boundary conditions in phase field fracture modelling. Presented at 2024 UK Association for Computational Mechanics Conference, Durham, UK
• Characterisation of anchor penetration behaviour for Cable burial risk assessment
  Sharif, Y. U., Brown, M. J., Coombs, W. M., Augarde, C. E., Bird, R. E., Carter, G., Macdonald, C., & Johnson, K. R. (2023, September). Characterisation of anchor penetration behaviour for Cable burial risk assessment. Presented at 9th Int. SUT OSIG Conference “Innovative Geotechnologies for Energy Transition”, London, UK
• An investigation into the methods for modelling pre-existing cracks in phase field problems
  Sims, B., Bird, R., Giani, S., & Coombs, W. (2023, April). An investigation into the methods for modelling pre-existing cracks in phase field problems. Presented at UKACM 2023, Warwick, UK
• Cone Penetration Tests (CPTs) in layered soils: a Material Point approach
  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
• Depth of lowering and layered soils; a case study from across the North Sea
  Macdonald, C., Carter, G. D. O., Johnson, K. R., Augarde, C. E., Coombs, W. M., Bird, R. E., Brown, M. J., & Sharif, Y. U. (2023, September). Depth of lowering and layered soils; a case study from across the North Sea. Presented at 9th Int. SUT OSIG Conference “Innovative Geotechnologies for Energy Transition”, London, UK
• An open-source Julia code for geotechnical MPM
  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
• A discontinuous Galerkin hp-adaptive finite element method for brittlecrack propagation
  Bird, R., Coombs, W., & Giani, S. (2017, December). A discontinuous Galerkin hp-adaptive finite element method for brittlecrack propagation. Presented at 25th UKACM Conference on Computational Mechanics, Birmingham, UK
• Two dimensional configurational-force-driven crack propagation using the discontinuous Galerkin method with rp-adaptivity
  Bird, R., Coombs, W., & Giani, S. (2023, March). Two dimensional configurational-force-driven crack propagation using the discontinuous Galerkin method with rp-adaptivity. Presented at ACME - UK 2016 24th Conference of the Association for Computational Mechanics in Engineering., Cardiff, UK

Conference Proceeding

• UKACM Proceedings 2024
  (2024, April). UKACM Proceedings 2024. Presented at 2024 UK Association for Computational Mechanics Conference, Durham, UK

Journal Article

• A dynamic implicit 3D material point-to-rigid body contact approach for large deformation analysis
  Bird, R., Pretti, G., Coombs, W., Augarde, C., Sharif, Y. U., Brown, M. J., Carter, G., Macdonald, C., & Johnson, K. (in press). A dynamic implicit 3D material point-to-rigid body contact approach for large deformation analysis. International Journal for Numerical Methods in Engineering,
• The Stress-Continuous Material Point Method: a technique to alleviate cell-crossing instability while retaining linear shape functions
  Pretti, G., Bird, R., Coombs, W., Augarde, C., & Giani, S. (in press). The Stress-Continuous Material Point Method: a technique to alleviate cell-crossing instability while retaining linear shape functions. Computer Methods in Applied Mechanics and Engineering,
• The Aggregated Material Point Method (AgMPM)
  Coombs, W., Bird, R., & Pretti, G. (2025). The Aggregated Material Point Method (AgMPM). Computer Methods in Applied Mechanics and Engineering, 442, Article 118012. https://doi.org/10.1016/j.cma.2025.118012
• A stable poro-mechanical formulation for Material Point Methods leveraging overlapping meshes and multi-field ghost penalisation
  Pretti, G., Bird, R., Gavin, N., Coombs, W., & Augarde, C. (2025). A stable poro-mechanical formulation for Material Point Methods leveraging overlapping meshes and multi-field ghost penalisation. International Journal for Numerical Methods in Engineering, 126(5), Article e7630. https://doi.org/10.1002/nme.7630
• Comparison of 1g and centrifuge modelling of drag embedment anchors with subsurface wireless tracking
  Sharif, Y., Brown, M. J., Knappett, J., Davidson, C., Bird, R., Coombs, W., Augarde, C., Carter, G., Macdonald, C., & Johnson, K. (2025). Comparison of 1g and centrifuge modelling of drag embedment anchors with subsurface wireless tracking. International Journal of Physical Modelling in Geotechnics, 25(2), 102-114. https://doi.org/10.1680/jphmg.24.00029
• An implicit material point-to-rigid body contact approach for large deformation soil-structure interaction
  Bird, R., Pretti, G., Coombs, W., Augarde, C., Sharif, Y., Brown, M., Carter, G., Macdonald, C., & Johnson, K. (2024). An implicit material point-to-rigid body contact approach for large deformation soil-structure interaction. Computers and Geotechnics, 174, Article 106646. https://doi.org/10.1016/j.compgeo.2024.106646
• An hp-adaptive discontinuous Galerkin method for phase field fracture
  Bird, R. E., Augarde, C. E., Coombs, W. M., Duddu, R., Giani, S., Huynh, P. T., & Sims, B. (2023). An hp-adaptive discontinuous Galerkin method for phase field fracture. Computer Methods in Applied Mechanics and Engineering, 416, Article 116336. https://doi.org/10.1016/j.cma.2023.116336
• An open source hp-adaptive discontinuous Galerkin finite element solver for linear elasticity
  Wiltshire, T., Bird, R. E., Coombs, W. M., & Giani, S. (2022). An open source hp-adaptive discontinuous Galerkin finite element solver for linear elasticity. Advances in Engineering Software, 171, https://doi.org/10.1016/j.advengsoft.2022.103147
• A configurational force driven cracking particle method for modelling crack propagation in 2D
  Ai, W., Bird, R., Coombs, W., & Augarde, C. (2019). A configurational force driven cracking particle method for modelling crack propagation in 2D. Engineering Analysis with Boundary Elements, 104, 197-208. https://doi.org/10.1016/j.enganabound.2019.03.008
• Accurate Configuration Force Evaluation via hp-adaptive Discontinuous Galerkin Finite Element Analysis
  Bird, R., Coombs, W., & Giani, S. (2019). Accurate Configuration Force Evaluation via hp-adaptive Discontinuous Galerkin Finite Element Analysis. Engineering Fracture Mechanics, 216, Article 106370. https://doi.org/10.1016/j.engfracmech.2019.02.029
• A posteriori discontinuous Galerkin error estimator for linear elasticity
  Bird, R., Coombs, W., & Giani, S. (2019). A posteriori discontinuous Galerkin error estimator for linear elasticity. Applied Mathematics and Computation, 344-345, 78-96. https://doi.org/10.1016/j.amc.2018.08.039
• Rapid non-linear finite element analysis of continuous and discontinuous Galerkin methods in MATLAB
  O'Sullivan, S., Bird, R., Coombs, W., & Giani, S. (2019). Rapid non-linear finite element analysis of continuous and discontinuous Galerkin methods in MATLAB. Computers and Mathematics with Applications, 78(9), 3007-3026. https://doi.org/10.1016/j.camwa.2019.03.012
• A quasi-static discontinuous Galerkin configurational force crack propagation method for brittle materials
  Bird, R., Coombs, W., & Giani, S. (2018). A quasi-static discontinuous Galerkin configurational force crack propagation method for brittle materials. International Journal for Numerical Methods in Engineering, 113(7), 1061-1080. https://doi.org/10.1002/nme.5699
• Earthquake Nucleation Size: Evidence of Loading Rate Dependence in Laboratory Faults
  Guérin‐Marthe, S., Nielsen, S., Bird, R., Giani, S., & Di Toro, G. (2018). Earthquake Nucleation Size: Evidence of Loading Rate Dependence in Laboratory Faults. Journal of Geophysical Research. Solid Earth, 124(1), 689-708. https://doi.org/10.1029/2018jb016803
• Fast native-MATLAB stiffness assembly for SIPG linear elasticity
  Bird, R., Coombs, W., & Giani, S. (2017). Fast native-MATLAB stiffness assembly for SIPG linear elasticity. Computers and Mathematics with Applications, 74(12), 3209-3230. https://doi.org/10.1016/j.camwa.2017.08.022

Report

• Layered soils in the shallow subsurface (<6.0 m), North Sea: a data report
  Johnson, K. R., Carter, G., & Macdonald, C. (2024). Layered soils in the shallow subsurface (