Cantilever modelling in the railway catenary shape-finding problem

[EN] Catenary designers need accurate numerical simulation tools to improve the system performance, increase operational speed, minimize wear and prevent arcing. To obtain reliable results, the catenary numerical model must avoid over-simplifying the hypotheses, which significantly affect the outcom...

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Authors: Aldaz-Saca, Nelson Hernán, Gregori Verdú, Santiago|||0000-0002-0483-3531, Gil-Romero, Jaime|||0000-0001-5597-5938, Tur Valiente, Manuel|||0000-0001-7683-4771, Fuenmayor Fernández, Francisco-Javier|||0000-0003-3594-9593
Format: article
Publication Date:2024
Country:España
Institution:Universitat Politècnica de València (UPV)
Repository:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Language:English
OAI Identifier:oai:riunet.upv.es:10251/220131
Online Access:https://riunet.upv.es/handle/10251/220131
Access Level:Open access
Keyword:Cantilevers
Railway catenary
Shape-finding problem
Substructuring
General track layout
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repository_id_str
spelling Cantilever modelling in the railway catenary shape-finding problemAldaz-Saca, Nelson HernánGregori Verdú, Santiago|||0000-0002-0483-3531Gil-Romero, Jaime|||0000-0001-5597-5938Tur Valiente, Manuel|||0000-0001-7683-4771Fuenmayor Fernández, Francisco-Javier|||0000-0003-3594-9593CantileversRailway catenaryShape-finding problemSubstructuringGeneral track layout[EN] Catenary designers need accurate numerical simulation tools to improve the system performance, increase operational speed, minimize wear and prevent arcing. To obtain reliable results, the catenary numerical model must avoid over-simplifying the hypotheses, which significantly affect the outcome, even if this involves increasing the model¿s complexity and computational cost. While the cantilevers that support the catenary wires are frequently omitted or over-simplified in many published studies, we incorporate the cantilevers into the catenary model to examine their impact on the static and dynamic behaviour of the catenary, and to develop a shape-finding procedure to include the cantilevers by a substructuring approach. For this we compared three scenarios: (i) a conventional catenary model without cantilevers, plus two other more realistic models that include the cantilevers: (ii) considering cantilever deformation in the geometric design, and (iii) disregarding cantilever deformation in the geometric design. The findings suggest that including the cantilevers reduces the stiffness of the system and produces a similar contact force. Although the two cantilever design options analysed result in slightly different initial catenary configurations, they also yield a very similar contact force. These findings therefore validate using simplified supports, provided they are appropriately calibrated, for which the proposed comprehensive cantilever model can be applied.The authors wish to thank the financial support received from Generalitat Valenciana (PROMETEO/2021/046) , and the project (PID2020-113458RB-I00) funded by MICIU/AEI/10.13039/501100011033. The useful information provided by Jose Antonio Fernandez Lopez is also acknowledged.ElsevierDepartamento de Ingeniería Mecánica y de MaterialesInstituto Universitario de Investigación Concertado de Ingeniería Mecánica y BiomecánicaEscuela Técnica Superior de Ingeniería Aeroespacial y Diseño IndustrialEscuela Técnica Superior de Ingeniería IndustrialGENERALITAT VALENCIANAAGENCIA ESTATAL DE INVESTIGACIONUniversitat Politècnica de ValènciaRepositorio Institucional de la Universitat Politècnica de València Riunet20242024-10-01journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://riunet.upv.es/handle/10251/220131reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valénciainstname:Universitat Politècnica de València (UPV)InglésengAgencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020 PID2020-113458RB-I00 ENSAYOS HIL DE PANTOGRAFOS CON MODELOS AVANZADOS DE CATENARIAS VIRTUALESGeneralitat Valenciana https://doi.org/10.13039/501100003359 PROMETEO%2F2021%2F046 MODELADO NUMÉRICO AVANZADO EN INGENIERÍA MECÁNICAopen accesshttp://purl.org/coar/access_right/c_abf2Reconocimiento - No comercial (by-nc) http://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccessoai:riunet.upv.es:10251/2201312026-06-13T07:49:27Z
dc.title.none.fl_str_mv Cantilever modelling in the railway catenary shape-finding problem
title Cantilever modelling in the railway catenary shape-finding problem
spellingShingle Cantilever modelling in the railway catenary shape-finding problem
Aldaz-Saca, Nelson Hernán
Cantilevers
Railway catenary
Shape-finding problem
Substructuring
General track layout
title_short Cantilever modelling in the railway catenary shape-finding problem
title_full Cantilever modelling in the railway catenary shape-finding problem
title_fullStr Cantilever modelling in the railway catenary shape-finding problem
title_full_unstemmed Cantilever modelling in the railway catenary shape-finding problem
title_sort Cantilever modelling in the railway catenary shape-finding problem
dc.creator.none.fl_str_mv Aldaz-Saca, Nelson Hernán
Gregori Verdú, Santiago|||0000-0002-0483-3531
Gil-Romero, Jaime|||0000-0001-5597-5938
Tur Valiente, Manuel|||0000-0001-7683-4771
Fuenmayor Fernández, Francisco-Javier|||0000-0003-3594-9593
author Aldaz-Saca, Nelson Hernán
author_facet Aldaz-Saca, Nelson Hernán
Gregori Verdú, Santiago|||0000-0002-0483-3531
Gil-Romero, Jaime|||0000-0001-5597-5938
Tur Valiente, Manuel|||0000-0001-7683-4771
Fuenmayor Fernández, Francisco-Javier|||0000-0003-3594-9593
author_role author
author2 Gregori Verdú, Santiago|||0000-0002-0483-3531
Gil-Romero, Jaime|||0000-0001-5597-5938
Tur Valiente, Manuel|||0000-0001-7683-4771
Fuenmayor Fernández, Francisco-Javier|||0000-0003-3594-9593
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Departamento de Ingeniería Mecánica y de Materiales
Instituto Universitario de Investigación Concertado de Ingeniería Mecánica y Biomecánica
Escuela Técnica Superior de Ingeniería Aeroespacial y Diseño Industrial
Escuela Técnica Superior de Ingeniería Industrial
GENERALITAT VALENCIANA
AGENCIA ESTATAL DE INVESTIGACION
Universitat Politècnica de València
Repositorio Institucional de la Universitat Politècnica de València Riunet
dc.subject.none.fl_str_mv Cantilevers
Railway catenary
Shape-finding problem
Substructuring
General track layout
topic Cantilevers
Railway catenary
Shape-finding problem
Substructuring
General track layout
description [EN] Catenary designers need accurate numerical simulation tools to improve the system performance, increase operational speed, minimize wear and prevent arcing. To obtain reliable results, the catenary numerical model must avoid over-simplifying the hypotheses, which significantly affect the outcome, even if this involves increasing the model¿s complexity and computational cost. While the cantilevers that support the catenary wires are frequently omitted or over-simplified in many published studies, we incorporate the cantilevers into the catenary model to examine their impact on the static and dynamic behaviour of the catenary, and to develop a shape-finding procedure to include the cantilevers by a substructuring approach. For this we compared three scenarios: (i) a conventional catenary model without cantilevers, plus two other more realistic models that include the cantilevers: (ii) considering cantilever deformation in the geometric design, and (iii) disregarding cantilever deformation in the geometric design. The findings suggest that including the cantilevers reduces the stiffness of the system and produces a similar contact force. Although the two cantilever design options analysed result in slightly different initial catenary configurations, they also yield a very similar contact force. These findings therefore validate using simplified supports, provided they are appropriately calibrated, for which the proposed comprehensive cantilever model can be applied.
publishDate 2024
dc.date.none.fl_str_mv 2024
2024-10-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://riunet.upv.es/handle/10251/220131
url https://riunet.upv.es/handle/10251/220131
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Agencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020 PID2020-113458RB-I00 ENSAYOS HIL DE PANTOGRAFOS CON MODELOS AVANZADOS DE CATENARIAS VIRTUALES
Generalitat Valenciana https://doi.org/10.13039/501100003359 PROMETEO%2F2021%2F046 MODELADO NUMÉRICO AVANZADO EN INGENIERÍA MECÁNICA
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reconocimiento - No comercial (by-nc)
http://creativecommons.org/licenses/by-nc/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reconocimiento - No comercial (by-nc)
http://creativecommons.org/licenses/by-nc/4.0/
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:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
instname:Universitat Politècnica de València (UPV)
instname_str Universitat Politècnica de València (UPV)
reponame_str RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
collection RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812429

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