All Outputs (3)

Micro-mechanical behavior of stone-blowing in ballast maintenance using DEM-CFD coupling method (2024)
Journal Article
Chen, C., Rao, W., Zhang, L., McDowell, G., & Li, P. (2024). Micro-mechanical behavior of stone-blowing in ballast maintenance using DEM-CFD coupling method. Transportation Geotechnics, 46, Article 101263. https://doi.org/10.1016/j.trgeo.2024.101263

Stone-blowing restores the track geometry by blowing small crushed stones into the bottom of the sleeper, extending the maintenance period. In this study, ballast and filling stones were modelled using discrete element method (DEM), while the air blo... Read More about Micro-mechanical behavior of stone-blowing in ballast maintenance using DEM-CFD coupling method.

A study of membrane correction accounting for both curvature and tension in DEM simulations of triaxial tests of sand and ballast with two alternative flexible membrane models (2024)
Journal Article
Tolomeo, M., & McDowell, G. R. (2024). A study of membrane correction accounting for both curvature and tension in DEM simulations of triaxial tests of sand and ballast with two alternative flexible membrane models. Granular Matter, 26(2), Article 47. https://doi.org/10.1007/s10035-024-01419-1

In DEM simulations of triaxial tests, modelling a flexible lateral membrane is crucial and challenging. It is essential for the correct application of a uniform lateral pressure and for an accurate measurement of sample volume. Here, we introduce a m... Read More about A study of membrane correction accounting for both curvature and tension in DEM simulations of triaxial tests of sand and ballast with two alternative flexible membrane models.

Modelling the mechanical behaviour of clay using particle-scale simulations (2024)
Journal Article
de Bono, J., & McDowell, G. (2024). Modelling the mechanical behaviour of clay using particle-scale simulations. Granular Matter, 26(2), Article 29. https://doi.org/10.1007/s10035-024-01401-x

This paper demonstrates the latest developments in particle-scale modelling of a clay. It shows that by creating an initial sample of platelets featuring aggregated stacks, excellent macroscopic behaviour is achieved. This approach is justified by ex... Read More about Modelling the mechanical behaviour of clay using particle-scale simulations.