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A novel methodology to automatically include general track flexibility in railway vehicle dynamic analyses

2021-04Journal article Restricted access
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dc.contributor.authorNeves Costa, João
dc.contributor.authorAntunes, Pedro
dc.contributor.authorMagalhães, Hugo
dc.contributor.authorPombo, João
dc.contributor.authorAmbrosio, Jorge
dc.date.accessioned2021-06-22T18:30:27Z
dc.date.available2021-06-22T18:30:27Z
dc.date.issued2021-04
dc.description.abstractThe interaction between the rolling stock and the infrastructure plays a crucial role in railway vehicle dynamics. The standard approach consists of using a multibody formulation to model the railway vehicles running on simplified tracks. The track model can be rigid, if it comprises only a geometric description of the rail; semi-rigid, if it considers an elastic foundation underneath the rail; or a moving track model, if it comprises a track section underneath each wheelset traveling with the same speed of the vehicle. Despite their computational inexpensiveness, these approaches do not provide a complete representation of track flexibility and disregard coupling effects with the vehicle and among the track components. This work proposes a methodology to automatically generate finite element models of railway tracks comprising its relevant flexible components, i.e., rails, pads, fastening systems, sleepers, and ballast or slab. The finite element mesh is generated based on a parametric description of the track that allows an accurate description of its geometry, including curvature, cross-level, grade, and irregularities. The methodology is demonstrated with a case study in which a track with a complex geometry is loaded with two different approaches. The first approach prescribes moving loads, which is a typical approach used to design or analyze the infrastructure. The second approach applies loads retrieved from the dynamic analysis of a complete vehicle. The results show the benefits of this method and reveal that prescribed loading underestimates the forces resulting from the vehicle dynamics, which is an important issue on curved sections.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationCOSTA, João Neves; [et al] – A novel methodology to automatically include general track flexibility in railway vehicle dynamic analyses. Journal of Rail and Rapid Transit (Proceedings of the Institution of Mechanical Engineers Part F). ISSN 0954-4097. Vol. 235, N.º 4 (2020), pp. 478-493pt_PT
dc.identifier.doi10.1177/0954409720945420pt_PT
dc.identifier.eissn2041-3017
dc.identifier.issn0954-4097
dc.identifier.urihttp://hdl.handle.net/10400.21/13468
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSage Publicationspt_PT
dc.relationPD/BD/128138/2016 - FCTpt_PT
dc.relation140/2019 - LusoAmerican Development Foundationpt_PT
dc.relationDevelopment of Advanced Multidisciplinary Methods for Railway Dynamics Applications
dc.subjectTrack loadingpt_PT
dc.subjectVehicle track interactionpt_PT
dc.subjectTrack modelingpt_PT
dc.subjectWheel-rail contactpt_PT
dc.subjectTrack geometrypt_PT
dc.titleA novel methodology to automatically include general track flexibility in railway vehicle dynamic analysespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleDevelopment of Advanced Multidisciplinary Methods for Railway Dynamics Applications
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F96695%2F2013/PT
oaire.citation.endPage493pt_PT
oaire.citation.issue4pt_PT
oaire.citation.startPage478pt_PT
oaire.citation.titleJournal of Rail and Rapid Transitpt_PT
oaire.citation.volume235pt_PT
person.familyNameMarçal Neves Costa
person.familyNameAntunes
person.familyNameMagalhães
person.familyNamePombo
person.familyNameAmbrosio
person.givenNameJoão Pedro
person.givenNamePedro
person.givenNameHugo
person.givenNameJoão
person.givenNameJorge
person.identifier2438479
person.identifierG-2796-2018
person.identifier.ciencia-id9318-AAB8-EF8C
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person.identifier.ciencia-id441A-7D7A-0F89
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person.identifier.ciencia-idC111-753F-D398
person.identifier.orcid0000-0002-8261-406X
person.identifier.orcid0000-0001-6910-8456
person.identifier.orcid0000-0001-7070-7958
person.identifier.orcid0000-0002-5877-1989
person.identifier.orcid0000-0001-6681-5657
person.identifier.ridAAE-3662-2019
person.identifier.ridG-2796-2018
person.identifier.ridB-9140-2013
person.identifier.ridD-1685-2010
person.identifier.scopus-author-id55108715000
person.identifier.scopus-author-id56034869200
person.identifier.scopus-author-id16022941000
person.identifier.scopus-author-id7003433776
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
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