Safety assessment of underground vehicles passing over highly resilient straight tracks in the presence of a broken rail

González, Francisco Javier and Suárez Esteban, Berta and Paulin, Jenny and Fernández, Ignacio (2008). Safety assessment of underground vehicles passing over highly resilient straight tracks in the presence of a broken rail. "Journal of Rail and Rapid Transit", v. 222 (n. 1); pp. 69-84. ISSN 0954-4097. https://doi.org/10.1243/09544097JRRT128.

Description

Title: Safety assessment of underground vehicles passing over highly resilient straight tracks in the presence of a broken rail
Author/s:
  • González, Francisco Javier
  • Suárez Esteban, Berta
  • Paulin, Jenny
  • Fernández, Ignacio
Item Type: Article
Título de Revista/Publicación: Journal of Rail and Rapid Transit
Date: 1 January 2008
ISSN: 0954-4097
Volume: 222
Subjects:
Freetext Keywords: slab track, resilient track, block spacing, vehicle-track interaction, broken rail, rail breakage, simulation, derailment risk, safety, running stability
Faculty: E.T.S.I. Industriales (UPM)
Department: Ingeniería Mecánica y de Fabricación [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

In this paper, vehicle-track interaction for a new slab track design, conceived to reduce noise and vibration levels has been analyzed, assessing the derailment risk for trains running on curved track when encountering a broken rail. Two different types of rail fastening systems with different elasticities have been analysed and compared. Numerical methods were used in order to simulate the dynamic behaviour of the train-track interaction. Multibody system (MBS) modelling techniques were combined with techniques based on the finite element method (FEM). MBS modelling was used for modelling the vehicle and FEM for simulating the elastic track. The simulation model was validated by comparing simulated results to experimental data obtained in field testing. During the simulations various safety indices, characteristic of derailment risk, were analysed. The simulations realised at the maximum running velocity of 110 km/h showed a similar behaviour for several track types. When reducing the running speed, the safety indices worsened for both cases. Although the worst behaviour was observed for the track with a greater elasticity, in none of the simulations did a derailment occur when running over the broken rail.

More information

Item ID: 12674
DC Identifier: http://oa.upm.es/12674/
OAI Identifier: oai:oa.upm.es:12674
DOI: 10.1243/09544097JRRT128
Official URL: http://pif.sagepub.com/content/222/1/69
Deposited by: Berta Suárez Esteban
Deposited on: 03 Sep 2012 10:35
Last Modified: 21 Apr 2016 11:57
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