Multibody model of railway vehicles with weakly coupled vertical and lateral dynamics

In the field of railroad dynamics, multibody models used for on-board state observation, parameter identification and track geometry measurement must ensure a high computational efficiency, particularly when real-time simulations are required. In this paper, a simplified model based on the assumptio...

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Autores: Muñoz Moreno, Sergio, Fernández Aceituno, Javier, Urda Gómez, Pedro, Escalona Franco, José Luis
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2019
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/162083
Acceso en línea:https://hdl.handle.net/11441/162083
https://doi.org/10.1016/j.ymssp.2018.06.019
Access Level:acceso abierto
Palabra clave:Multibody railway dynamics
Track irregularities
Weakly coupled dynamics
Symbolic computation
Efficient multibody formulation
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spelling Multibody model of railway vehicles with weakly coupled vertical and lateral dynamicsMuñoz Moreno, SergioFernández Aceituno, JavierUrda Gómez, PedroEscalona Franco, José LuisMultibody railway dynamicsTrack irregularitiesWeakly coupled dynamicsSymbolic computationEfficient multibody formulationIn the field of railroad dynamics, multibody models used for on-board state observation, parameter identification and track geometry measurement must ensure a high computational efficiency, particularly when real-time simulations are required. In this paper, a simplified model based on the assumption of weakly coupled lateral and vertical dynamics is proposed. Generalized forces included in the equations of motion are obtained using symbolic computations and the wheel-rail contact is modeled using knife-edge contact constraints and the concept of equivalent conicity. Resulting contact constraint equations can be solved analytically allowing the solution of ODE equations of motion in terms of independent coordinates. This general model considers arbitrary-geometry tracks including rail centerline irregularities. With the aim of showing the accuracy of the proposed model for the simulation of railways vehicle dynamics, a comparative study with a full 3D coupled dynamic model has been carried out for different vehicles and track geometries. The comparative study shows that the proposed simplified model in this work provides acceptable results for many applications. The model greatly improves the computational effort and it is applicable to real-life situations requiring a reduced set of parameters.ElsevierIngeniería Mecánica y FabricaciónIngeniería y Ciencia de los Materiales y del TransporteTEP123: Metalurgia e Ingeniería de los MaterialesTEP111: Ingeniería MecánicaMinisterio de Economía y Competitividad (MINECO). España2019info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/162083https://doi.org/10.1016/j.ymssp.2018.06.019reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésMechanical Systems and Signal Processing, 115, 570-592.TRA2014– 57609– Rhttps://www.sciencedirect.com/science/article/pii/S0888327018303534info:eu-repo/semantics/openAccessoai:idus.us.es:11441/1620832026-06-17T12:51:07Z
dc.title.none.fl_str_mv Multibody model of railway vehicles with weakly coupled vertical and lateral dynamics
title Multibody model of railway vehicles with weakly coupled vertical and lateral dynamics
spellingShingle Multibody model of railway vehicles with weakly coupled vertical and lateral dynamics
Muñoz Moreno, Sergio
Multibody railway dynamics
Track irregularities
Weakly coupled dynamics
Symbolic computation
Efficient multibody formulation
title_short Multibody model of railway vehicles with weakly coupled vertical and lateral dynamics
title_full Multibody model of railway vehicles with weakly coupled vertical and lateral dynamics
title_fullStr Multibody model of railway vehicles with weakly coupled vertical and lateral dynamics
title_full_unstemmed Multibody model of railway vehicles with weakly coupled vertical and lateral dynamics
title_sort Multibody model of railway vehicles with weakly coupled vertical and lateral dynamics
dc.creator.none.fl_str_mv Muñoz Moreno, Sergio
Fernández Aceituno, Javier
Urda Gómez, Pedro
Escalona Franco, José Luis
author Muñoz Moreno, Sergio
author_facet Muñoz Moreno, Sergio
Fernández Aceituno, Javier
Urda Gómez, Pedro
Escalona Franco, José Luis
author_role author
author2 Fernández Aceituno, Javier
Urda Gómez, Pedro
Escalona Franco, José Luis
author2_role author
author
author
dc.contributor.none.fl_str_mv Ingeniería Mecánica y Fabricación
Ingeniería y Ciencia de los Materiales y del Transporte
TEP123: Metalurgia e Ingeniería de los Materiales
TEP111: Ingeniería Mecánica
Ministerio de Economía y Competitividad (MINECO). España
dc.subject.none.fl_str_mv Multibody railway dynamics
Track irregularities
Weakly coupled dynamics
Symbolic computation
Efficient multibody formulation
topic Multibody railway dynamics
Track irregularities
Weakly coupled dynamics
Symbolic computation
Efficient multibody formulation
description In the field of railroad dynamics, multibody models used for on-board state observation, parameter identification and track geometry measurement must ensure a high computational efficiency, particularly when real-time simulations are required. In this paper, a simplified model based on the assumption of weakly coupled lateral and vertical dynamics is proposed. Generalized forces included in the equations of motion are obtained using symbolic computations and the wheel-rail contact is modeled using knife-edge contact constraints and the concept of equivalent conicity. Resulting contact constraint equations can be solved analytically allowing the solution of ODE equations of motion in terms of independent coordinates. This general model considers arbitrary-geometry tracks including rail centerline irregularities. With the aim of showing the accuracy of the proposed model for the simulation of railways vehicle dynamics, a comparative study with a full 3D coupled dynamic model has been carried out for different vehicles and track geometries. The comparative study shows that the proposed simplified model in this work provides acceptable results for many applications. The model greatly improves the computational effort and it is applicable to real-life situations requiring a reduced set of parameters.
publishDate 2019
dc.date.none.fl_str_mv 2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/11441/162083
https://doi.org/10.1016/j.ymssp.2018.06.019
url https://hdl.handle.net/11441/162083
https://doi.org/10.1016/j.ymssp.2018.06.019
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Mechanical Systems and Signal Processing, 115, 570-592.
TRA2014– 57609– R
https://www.sciencedirect.com/science/article/pii/S0888327018303534
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
repository.name.fl_str_mv
repository.mail.fl_str_mv
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