Author(s)

R. Mezeh, M. Sadek, F. Hage Chehade, A. Arab, I. Shahrour

Abstract

The main objective of this paper is to outline a novel simulation tool in the time domain, HSR-dyna, to predict the level of impact vibrations induced by the passage of high speed train HST over a railway track. Consequently, a vertical train-track interaction model which is widely presented in the literature was used to quantify the contact forces on the wheel-rail interface. The train with four wheelsets representing two bogies is a ten degree of freedom subsystem, the track is modelled as an infinite Euler-Bernoulli beam supported by a viscoelastic layer and the two subsystems are coupled together via the non-linear Hertz contact mechanism. A vast array of model permutations is computed to assess the effect of each input parameter on the response of the dynamic system, comprising the velocity of the HST and the severity of track irregularity.

Keywords

high speed train, railway response, finite element method, Hertz contact theory