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A three-dimensional approach for contact detection between realistic wheel and rail surfaces for improved railway dynamic analysis

2020-07Journal article Restricted access
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dc.contributor.authorMarques, Filipe
dc.contributor.authorMagalhães, Hugo
dc.contributor.authorPombo, João
dc.contributor.authorAmbrosio, Jorge
dc.contributor.authorFlores, Paulo
dc.date.accessioned2020-05-06T14:08:19Z
dc.date.available2020-05-06T14:08:19Z
dc.date.issued2020-07
dc.description.abstractThe wheel-rail contact modeling problem assumes a preponderant role on the dynamic analysis of railway systems using multibody systems formulations. The accurate and efficient evaluation of both location and magnitude of the wheel-rail contact forces is fundamental for the development of reliable computational tools. The wheel concave zone might be a source of numerical difficulties when searching the contact points, which has been neglected in several works. Here, it is demonstrated that the minimum distance method does not always converge when the wheel surface is not fully convex, being an alternative methodology proposed to perform the contact detection. This approach examines independently the contact between each wheel strip and the rail, where the maximum virtual penetration is determined and associated with the location of the contact point. Then, an Hertzian-based force model is considered for both normal and tangential forces. The results obtained from dynamic simulations show that the minimum distance method and the proposed methodology provide a similar response for simplified wheel profiles. However, the new approach described here is reliable in the identification of the contact point when realistic wheel profiles are considered, which is not the case with the minimum distance method.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationMARQUES, Filipe; [et al] – A three-dimensional approach for contact detection between realistic wheel and rail surfaces for improved railway dynamic analysis. Mechanism and Machine Theory. ISSN: 0094-114X. Vol. 149 (2020), pp. 1-28pt_PT
dc.identifier.doi10.1016/j.mechmachtheory.2020.103825pt_PT
dc.identifier.issn0094-114X
dc.identifier.urihttp://hdl.handle.net/10400.21/11596
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationPD/BD/114154/2016 - FCTpt_PT
dc.relationPOCI-01-0145-FEDER-028424 - FCTpt_PT
dc.relationUIDB/04436/2020 - FCTpt_PT
dc.relationUIDB/50022/2020 - IDMEC under LAETApt_PT
dc.relationDevelopment of Advanced Multidisciplinary Methods for Railway Dynamics Applications
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dc.subjectWheel-rail contactpt_PT
dc.subjectContact detectionpt_PT
dc.subjectConformal contactpt_PT
dc.subjectRailway dynamicspt_PT
dc.titleA three-dimensional approach for contact detection between realistic wheel and rail surfaces for improved railway dynamic analysispt_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.endPage28pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleMechanism and Machine Theorypt_PT
oaire.citation.volume149pt_PT
person.familyNameMarques
person.familyNameMagalhães
person.familyNamePombo
person.familyNameAmbrosio
person.familyNameFlores
person.givenNameFilipe
person.givenNameHugo
person.givenNameJoão
person.givenNameJorge
person.givenNamePaulo
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person.identifier.scopus-author-id9841599800
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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