| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Walther, Jens Honore
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (7/7 displayed)
- 2021Discrete element modelling of track ballast capturing the true shape of ballast stonescitations
- 2020Investigating the effect of in-cylinder gas compositions on sulfuric acid formation and condensation using CFD modeling under large two-stroke marine engine-like conditions
- 2019Surface Wetting in Multiphase Pipe-Flow
- 2019Numerical Investigation of Droplet Impact on Metallic Meshes
- 2019Molecular Dynamics Simulation of the Thermal Transport on Holey Copper Substrates
- 2015Flow Dynamics of green sand in the DISAMATIC moulding process using Discrete element method (DEM)citations
- 2014Simulations of a single vortex ring using an unbounded, regularized particle-mesh based vortex method
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article
Discrete element modelling of track ballast capturing the true shape of ballast stones
Abstract
Railway ballast affected by heavy cyclic loading degrades and spreads resulting in an uncomfortable transportation caused by undesirable vibrations. Restoring a well sorted track ballast can be expensive. This paper analyzes track ballast deformation using the Discrete Element Method (DEM). The simulations are performed using the STAR-CCM+ software in a three-dimensional domain. Four track ballast models are studied. The first two models describe the ballast as spheres with and without rolling resistance, respectively. The third model uses a clump model that allows breaking of the ballast, whereas the fourth model describes the ballast as composite particles generated from 3D-scanned ballast stones. The sleepers and rails are modelled as DEM particles. As a supplement to the study of different ballast models, the influence of variation in the loading profile is investigated. The largest obtained deformation is observed in the ballast modelled as spheres and the smallest deformation in the ballast modelled from the 3D scanned ballast stones. The results highlight the importance of describing the ballast as non-spherical geometries.