Impact of the radiation of elastic waves in the soil in a periodic railway track model
Résumé
In most railway track models, the soil is modelled as a spring foundation or as a bounded volume (e.g. through the FEM). However, these classical approaches cannot represent with accuracy both the static response and the dynamic behaviour of the track at low frequencies. In this paper, the necessity to include in a track model the radiation of elastic waves in the soil is assessed. It is shown that Perfectly Matched Layers are an efficient solution. Their implementation within a reduced periodic track model and the numerical simulations of a simplified track model are presented.
| Origine | Fichiers produits par l'(les) auteur(s) |
|---|