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Parametric Analysis of the Mandrel Geometrical Data in a Cold Expansion Process of Small Holes Drilled in Thick Plates

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dc.contributor.authorCalaf Chica, José
dc.contributor.authorTeti, Roberto
dc.contributor.authorSegreto, Tiziana
dc.contributor.authorMarín Martín, Marta María
dc.contributor.authorRubio Alvir, Eva María
dc.date.accessioned2024-05-20T11:38:36Z
dc.date.available2024-05-20T11:38:36Z
dc.date.issued2019-12-08
dc.description.abstractCold expansion technology is a cold-forming process widely used in aeronautics to extend the fatigue life of riveted and bolted holes. During this process, an oversized mandrel is pushed through the hole in order to yield it and generate compressive residual stresses contributing to the fatigue life extension of the hole. In this paper, a parametric analysis of the mandrel geometrical data (inlet angle straight zone length and diametric interference) and their influence on the residual stresses was carried out using a finite element method (FEM). The obtained results were compared with the conclusions presented in a previous parametric FEM analysis on the influence of the swage geometry in a swaging cold-forming process of gun barrels. This process could be considered, in a simplified way, as a scale-up of the cold expansion process of small holes, and this investigation demonstrated the influence of the diameter ratio (K) on the relation between the mandrel or swage geometry and the residual stresses obtained after the cold-forming process.en
dc.description.versionversión publicada
dc.identifier.doi10.3390/ma12244105
dc.identifier.issn1996-1944
dc.identifier.urihttps://hdl.handle.net/20.500.14468/12354
dc.journal.issue24
dc.journal.titleMaterials
dc.journal.volume12
dc.language.isoen
dc.publisherMDPI
dc.relation.centerE.T.S. de Ingenieros Industriales
dc.relation.departmentIngeniería de Construcción y Fabricación
dc.rightsAtribución 4.0 Internacional
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by/4.0
dc.subject.keywordscold expansion
dc.subject.keywordsmandrel
dc.subject.keywordscold-forming
dc.subject.keywordsswaging
dc.titleParametric Analysis of the Mandrel Geometrical Data in a Cold Expansion Process of Small Holes Drilled in Thick Plateses
dc.typeartículoes
dc.typejournal articleen
dspace.entity.typePublication
relation.isAuthorOfPublication319111a3-c914-4f0d-b60c-a2d92f31c2a2
relation.isAuthorOfPublicationfbd2723b-d78c-49a8-b7bf-0a163ad2a19a
relation.isAuthorOfPublication.latestForDiscovery319111a3-c914-4f0d-b60c-a2d92f31c2a2
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