A finite element methodology to model flexible tracks with arbitrary geometry for railway dynamics applications
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.21/13469 |
Resumo: | The dynamic analysis of railway vehicles requires an accurate representation of the vehicle, the track geometry and structure, and their interaction. Generally, flexible track models with curved geometries represent the rails with straight beam elements, which results in a piecewise linear representation of the rails. Consequently, the wheel-rail contact mechanics are not properly captured, and the wheel-rail contact forces present spurious high-frequency oscillations. This work proposes a novel approach to model flexible railway tracks with arbitrary geometries, in which the correct geometry in the wheel-rail contact mechanics is assured by modeling the rails as Timoshenko curved beam elements. This approach improves both the geometric representation of the rails and the accuracy of the wheel-rail contact forces calculation. A realistic operation scenario in which a multibody model of a railway vehicle runs on a flexible track with a curved geometry is used here to demonstrate the novel aspects of this work and then discuss the improvements over the conventional approaches. The results show that the proposed methodology greatly improves the computation of the wheel-rail interaction forces and prevents spurious oscillations from propagating to the vehicle. |
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7160 |
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A finite element methodology to model flexible tracks with arbitrary geometry for railway dynamics applicationsTrack modelingWheel-rail contactVehicle dynamicsCo-simulationCurved beamThe dynamic analysis of railway vehicles requires an accurate representation of the vehicle, the track geometry and structure, and their interaction. Generally, flexible track models with curved geometries represent the rails with straight beam elements, which results in a piecewise linear representation of the rails. Consequently, the wheel-rail contact mechanics are not properly captured, and the wheel-rail contact forces present spurious high-frequency oscillations. This work proposes a novel approach to model flexible railway tracks with arbitrary geometries, in which the correct geometry in the wheel-rail contact mechanics is assured by modeling the rails as Timoshenko curved beam elements. This approach improves both the geometric representation of the rails and the accuracy of the wheel-rail contact forces calculation. A realistic operation scenario in which a multibody model of a railway vehicle runs on a flexible track with a curved geometry is used here to demonstrate the novel aspects of this work and then discuss the improvements over the conventional approaches. The results show that the proposed methodology greatly improves the computation of the wheel-rail interaction forces and prevents spurious oscillations from propagating to the vehicle.ElsevierRCIPLCosta, J. N.Antunes, PedroMagalhães, HugoPombo, JoãoAmbrósio, J.2021-06-23T10:15:30Z2021-10-012021-10-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.21/13469engCOSTA, J. N.; [et al] – A finite element methodology to model flexible tracks with arbitrary geometry for railway dynamics applications. Computers and Structures. ISSN 0045-7949. Vol. 254 (2020), pp. 1-150045-794910.1016/j.compstruc.2021.106519metadata only accessinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-08-03T10:08:12Zoai:repositorio.ipl.pt:10400.21/13469Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:21:24.820604Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
A finite element methodology to model flexible tracks with arbitrary geometry for railway dynamics applications |
title |
A finite element methodology to model flexible tracks with arbitrary geometry for railway dynamics applications |
spellingShingle |
A finite element methodology to model flexible tracks with arbitrary geometry for railway dynamics applications Costa, J. N. Track modeling Wheel-rail contact Vehicle dynamics Co-simulation Curved beam |
title_short |
A finite element methodology to model flexible tracks with arbitrary geometry for railway dynamics applications |
title_full |
A finite element methodology to model flexible tracks with arbitrary geometry for railway dynamics applications |
title_fullStr |
A finite element methodology to model flexible tracks with arbitrary geometry for railway dynamics applications |
title_full_unstemmed |
A finite element methodology to model flexible tracks with arbitrary geometry for railway dynamics applications |
title_sort |
A finite element methodology to model flexible tracks with arbitrary geometry for railway dynamics applications |
author |
Costa, J. N. |
author_facet |
Costa, J. N. Antunes, Pedro Magalhães, Hugo Pombo, João Ambrósio, J. |
author_role |
author |
author2 |
Antunes, Pedro Magalhães, Hugo Pombo, João Ambrósio, J. |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
RCIPL |
dc.contributor.author.fl_str_mv |
Costa, J. N. Antunes, Pedro Magalhães, Hugo Pombo, João Ambrósio, J. |
dc.subject.por.fl_str_mv |
Track modeling Wheel-rail contact Vehicle dynamics Co-simulation Curved beam |
topic |
Track modeling Wheel-rail contact Vehicle dynamics Co-simulation Curved beam |
description |
The dynamic analysis of railway vehicles requires an accurate representation of the vehicle, the track geometry and structure, and their interaction. Generally, flexible track models with curved geometries represent the rails with straight beam elements, which results in a piecewise linear representation of the rails. Consequently, the wheel-rail contact mechanics are not properly captured, and the wheel-rail contact forces present spurious high-frequency oscillations. This work proposes a novel approach to model flexible railway tracks with arbitrary geometries, in which the correct geometry in the wheel-rail contact mechanics is assured by modeling the rails as Timoshenko curved beam elements. This approach improves both the geometric representation of the rails and the accuracy of the wheel-rail contact forces calculation. A realistic operation scenario in which a multibody model of a railway vehicle runs on a flexible track with a curved geometry is used here to demonstrate the novel aspects of this work and then discuss the improvements over the conventional approaches. The results show that the proposed methodology greatly improves the computation of the wheel-rail interaction forces and prevents spurious oscillations from propagating to the vehicle. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-06-23T10:15:30Z 2021-10-01 2021-10-01T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.21/13469 |
url |
http://hdl.handle.net/10400.21/13469 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
COSTA, J. N.; [et al] – A finite element methodology to model flexible tracks with arbitrary geometry for railway dynamics applications. Computers and Structures. ISSN 0045-7949. Vol. 254 (2020), pp. 1-15 0045-7949 10.1016/j.compstruc.2021.106519 |
dc.rights.driver.fl_str_mv |
metadata only access info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
metadata only access |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799133484906708992 |