Nonlinear models for lateral dynamics of railway vehicles on bridges subject to wind action

Goicolea Ruigómez, José María and Antolin Sanchez, Pablo and Oliva Quecedo, Javier (2013). Nonlinear models for lateral dynamics of railway vehicles on bridges subject to wind action. In: "V International Conference on Coupled Problems in Science and Engineering , Coupled Problems 2013", 17/06/2013-19/06/2013, Santa Eulalia, Ibiza, Spain. ISBN 978-84-941407-5-4.

Description

Title: Nonlinear models for lateral dynamics of railway vehicles on bridges subject to wind action
Author/s:
  • Goicolea Ruigómez, José María
  • Antolin Sanchez, Pablo
  • Oliva Quecedo, Javier
Item Type: Presentation at Congress or Conference (Other)
Event Title: V International Conference on Coupled Problems in Science and Engineering , Coupled Problems 2013
Event Dates: 17/06/2013-19/06/2013
Event Location: Santa Eulalia, Ibiza, Spain
Title of Book: Computational methods for coupled problems in science an engineering : V International Conference celebrated the 60th birthday of Eugenio Oñate : held on 17-19 of june 2013, Santa Eulalia, Ibiza, Spain
Date: June 2013
ISBN: 978-84-941407-5-4
Subjects:
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Mecánica de Medios Continuos y Teoría de Estructuras
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The study of lateral dynamics of running trains on bridges is of importance mainly for the safety of the traffic, and may be relevant for laterally compliant bridges. These studies require threedimensional coupled vehicle-bridge models, wheree consideration of wheel to rail contact is a key aspect. Furthermore, an adequate evaluation of safety of rail traffic requires nonlinear models. A nonlinear coupled model is proposed here for vehicle-structure vertical and lateral dynamics. Vehicles are considered as fully three-dimensional multibody systems including gyroscopic terms and large rotation effects. The bridge structure is modeled by means of finite elements which may be of beam, shell or continuum type and may include geometric or material nonlinearities. The track geometry includes distributed track alignment irregularities. Both subsystems (bridge and vehicles) are described with coordinates in absolute reference frames, as opposed to alternative approaches which describe the multibody system with coordinates relative to the base bridge motion. The wheelrail contact employed is a semi-Hertzian model based on realistic wheel-rail profiles. It allows a detailed geometrical description of the contact patch under each wheel including multiple-point contact, flange contact and uplift. Normal and tangential stresses in each contact are integrated at each time-step to obtain the resultant contact forces. The models have been implemented within an existing finite element analysis software with multibody capabilities, Abaqus (Simulia Ltd., 2010). Further details of the model are presented in Antolín et al. (2012). Representative applications are presented for railway vehicles under lateral wind action on laterally compliant viaducts, showing the relevance of the nonlinear wheel-rail contact model as well as the interaction between bridge and vehicle.

More information

Item ID: 33560
DC Identifier: http://oa.upm.es/33560/
OAI Identifier: oai:oa.upm.es:33560
Official URL: http://congress.cimne.com/coupled2013/frontal/ProgSesion.asp?id=134
Deposited by: Memoria Investigacion
Deposited on: 05 Mar 2015 12:33
Last Modified: 05 Mar 2015 12:33
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