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Influence of the operational conditions on static and dynamic stiffness of rail pads

2020-09Journal article Restricted access
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dc.contributor.authorSainz-Aja, Jose A.
dc.contributor.authorCarrascal, Isidro
dc.contributor.authorFerreño, Diego
dc.contributor.authorPombo, João
dc.contributor.authorCasado, José A.
dc.contributor.authorDIEGO, SORAYA
dc.date.accessioned2020-06-18T14:57:31Z
dc.date.available2020-06-18T14:57:31Z
dc.date.issued2020-09
dc.description.abstractThe track has a crucial role in the performance of the rail network as it provides support and guidance to the rolling stock. During train operation, the vehicle-track interaction generates high impact loads and fatigue, which lead to degradation of vehicle components and rail infrastructure. These loads tend to increase the maintenance needs and, consequently, the life-cycle-costs of the rail assets. In order to minimize these consequences, rail pads are generally used between the rails and the sleepers in order to provide flexibility to the track and to damp the transmission of noise and vibrations. In ballasted tracks, this flexibility is a combination of the mechanical properties of the ballast and the rail pads. However, in slab tracks, the flexibility of the infrastructure is almost exclusively dependant on the rail pads. These materials exhibit non-linear, dissipative characteristics that are affected by the service conditions such as temperature, frequency, toe load and axle load. This work aims to investigate experimentally different pad materials widely used in the rail industry in order to characterize the influence of these factors on the mechanical characteristics of the rail supporting elements. The detailed characterization of the rail pads enables not only better understanding of their performance in realistic service conditions, but also provides good perspectives for use of these well quantified mechanical properties in studying the vehicle-track dynamic behaviour in different scenarios and predicting the long-term performance of the infrastructure components.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationSAINZ-AJA, Jose A.; [et al] – Influence of the operational conditions on static and dynamic stiffness of rail pads. Mechanics of Materials. ISSN 0167-6636. Vol. 148 (2020), pp. 1-11pt_PT
dc.identifier.doi10.1016/j.mechmat.2020.103505pt_PT
dc.identifier.issn0167-6636
dc.identifier.urihttp://hdl.handle.net/10400.21/11884
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationUIDB/50022/2020 - FCT, through IDMEC, under LAETA projectpt_PT
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dc.subjectRail padpt_PT
dc.subjectDynamic stiffnesspt_PT
dc.subjectTemperaturept_PT
dc.subjectAxel loadpt_PT
dc.subjectToe loadpt_PT
dc.subjectFrequencypt_PT
dc.titleInfluence of the operational conditions on static and dynamic stiffness of rail padspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage11pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleMechanics of Materialspt_PT
oaire.citation.volume148pt_PT
person.familyNameCarrascal
person.familyNameFerreño
person.familyNamePombo
person.familyNameDIEGO
person.givenNameIsidro
person.givenNameDiego
person.givenNameJoão
person.givenNameSORAYA
person.identifier.ciencia-id3E1A-F8C1-9B8D
person.identifier.orcid0000-0002-7045-1267
person.identifier.orcid0000-0003-3533-1881
person.identifier.orcid0000-0002-5877-1989
person.identifier.orcid0000-0003-4518-7449
person.identifier.ridB-9140-2013
person.identifier.scopus-author-id9239704200
person.identifier.scopus-author-id16022941000
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
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