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

González, Francisco Javier; Suárez Esteban, Berta; Paulin, Jenny y 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.

Descripción

Título: Safety assessment of underground vehicles passing over highly resilient straight tracks in the presence of a broken rail
Autor/es:
  • González, Francisco Javier
  • Suárez Esteban, Berta
  • Paulin, Jenny
  • Fernández, Ignacio
Tipo de Documento: Artículo
Título de Revista/Publicación: Journal of Rail and Rapid Transit
Fecha: 1 Enero 2008
Volumen: 222
Materias:
Palabras Clave Informales: slab track, resilient track, block spacing, vehicle-track interaction, broken rail, rail breakage, simulation, derailment risk, safety, running stability
Escuela: E.T.S.I. Industriales (UPM)
Departamento: Ingeniería Mecánica y de Fabricación [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

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.

Más información

ID de Registro: 12674
Identificador DC: http://oa.upm.es/12674/
Identificador OAI: oai:oa.upm.es:12674
Identificador DOI: 10.1243/09544097JRRT128
URL Oficial: http://pif.sagepub.com/content/222/1/69
Depositado por: Berta Suárez Esteban
Depositado el: 03 Sep 2012 10:35
Ultima Modificación: 21 Abr 2016 11:57
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