 |
HAL UPEC - UPEM Portal |  |
 |
Journal articles
Dynamic behaviour of ballasted railway tracks: a discrete/continuous approach
Abstract : Owing to the small number of grains in the vertical direction of the ballast layer of a railway track, a discrete/continuum double-layer model is proposed: the upper layer (the ballast) is modelled by a discrete 3D-lattice of interacting grains whereas the infinite underlayer is a continuum linear elastic medium. The problem under consideration is the dynamic behaviour of this double-layer system under the action of a moving load. A parametric study concerning the underlayer stiffness, the load velocity and the grain size is conducted. A comparison with the continuum modelling is provided for realistic moving loads.
https://hal-upec-upem.archives-ouvertes.fr/hal-01644698
Contributor : Thibault Lemaire Connect in order to contact the contributor
Submitted on : Wednesday, November 22, 2017 - 3:05:01 PM
Last modification on : Tuesday, October 19, 2021 - 4:09:12 PM
Contributor : Thibault Lemaire Connect in order to contact the contributor
Submitted on : Wednesday, November 22, 2017 - 3:05:01 PM
Last modification on : Tuesday, October 19, 2021 - 4:09:12 PM