A reduced track model to understand the dynamic behavior of the track
TypeCommunications sans actes
Nowadays, trends in railways are for more traffic at higher speed, whereas infrastructures remain basically unchanged. As track design has evolved over the years based on experience, the introduction of numerical models could be a tool to gain better understanding of track behaviour and improve track design. Dynavoie software is a finite element model which aims to offer a comprehensive view of the track, taking into account all the components of the system, from the rail to the soil. This global approach is a specificity of the software, as well as the low computation time due to the reduction strategy. This paper presents model validation steps in the frequency domain, computing a receptance test and comparing it to another model presented in the literature. A characterisation of the railway substructure based on this test is then proposed.
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Validation of a reduced model of railway track allowing long 3D dynamic calculation of train-track interaction ARLAUD, Elodie; COSTA D'AGUIAR, Sofia; BALMES, Etienne (2014)In order to face challenges of increased traffic and speed on their infrastructures, railway companies need to develop numerical tools able to predict the dynamic behaviour of the track. Currently, two approaches are widely ...
ARLAUD, Elodie; COSTA D'AGUIAR, Sofia; BALMES, Etienne; FAUSSURIER, Guillaume (Civil-Comp Press, 2016)The main objective of this paper is to present an innovative numerical tool to represent the track and platform dynamic behavior under passing trains. Dynavoie is currently being developed for engineering purposes at SNCF. ...
ARLAUD, Elodie; COSTA D'AGUIAR, Sofia; BALMES, Etienne (Elsevier, 2016)This paper presents numerical simulations and experimental studies on the frequency domain behavior of railway track below 100 Hz, focusing on the link between the substructure properties of the track and its global dynamic ...
Wave damping and evanescence: how to combine the spatial and temporal visions of the same problem? 1 BALMES, Etienne; REBILLAT, Marc; ARLAUD, Elodie (Société Française d'Acoustique, 2016)It is proposed to analyze the forced response of periodic structures using a 2D Fourier transform using continuous time and discrete space. The simple example of compression waves is used to show that this response can be ...
PINAULT, Hadrien; ARLAUD, Elodie; BALMES, Etienne (ELSEVIER, 2020)Structures composed of repetitions of multiple identical cells are common and have been the object of a large body of literature on waveguides, periodic media, and cyclic symmetry. Starting from a cell model, possibly with ...