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dc.creatorMartínez Donaire, Andrés Jesúses
dc.creatorMorales-Palma, Domingoes
dc.creatorVallellano Martín, Carpóforoes
dc.date.accessioned2020-10-08T18:16:09Z
dc.date.available2020-10-08T18:16:09Z
dc.date.issued2020-08
dc.identifier.citationMartínez Donaire, A.J., Morales-Palma, D. y Vallellano Martín, C. (2020). On the Use of Strain Path Independent Metrics and Critical Distance Rule for Predicting Failure of AA7075-O Stretch-Bend Sheets. Materials, 13 (17). Article number 3660.
dc.identifier.issnEISSN 1996-1944es
dc.identifier.urihttps://hdl.handle.net/11441/101872
dc.description.abstractThe strain-based forming limit curve is the traditional tool to assess the formability of metal sheets. However, its application should be restricted to proportional loading processes under uniform strain conditions. Several works have focused on overcoming this limitation to characterize the safe process windows in industrial stretch-bend forming processes. In this paper, the use of critical distance rule and two path-independent stress-based metrics are explored to numerically predict failure of AA7075-O stretch-bend sheets with 1.6 mm thickness. Formability limits of the material were experimentally obtained by means of a series of Nakazima and stretch-bending tests at di erent thickness-over-radius ratios for inducing controlled non-uniform strain distributions across the sheet thickness. By using a 3D calibrated finite element model, the strain-based forming limit curve was numerically transformed into the path-independent stress and equivalent plastic strain polar spaces. The numerical predictions of necking strains in the stretch-bending simulations using the above approaches were successfully compared and critically discussed with the experimental results for di erent values of the critical distance. It was found that failure was triggered by a critical material volume of around the half thickness, measured from the inner surface, for the both path-independent metrics analyzed.es
dc.description.sponsorshipGobierno de España PGC2018-095508-B-I00es
dc.formatapplication/pdfes
dc.format.extent19 p.es
dc.language.isoenges
dc.publisherMDPIes
dc.relation.ispartofMaterials, 13 (17). Article number 3660.
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectFormability limitses
dc.subjectFailure predictiones
dc.subjectStretch-bend forminges
dc.subjectCritical distance rule (CDR)es
dc.subjectStrain path independent metricses
dc.subjectAA7075-Oes
dc.subjectFinite element analysis (FEA)es
dc.titleOn the Use of Strain Path Independent Metrics and Critical Distance Rule for Predicting Failure of AA7075-O Stretch-Bend Sheetses
dc.typeinfo:eu-repo/semantics/articlees
dcterms.identifierhttps://ror.org/03yxnpp24
dc.type.versioninfo:eu-repo/semantics/publishedVersiones
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses
dc.contributor.affiliationUniversidad de Sevilla. Departamento de Ingeniería Mecánica y de Fabricaciónes
dc.relation.projectIDPGC2018-095508-B-I00es
dc.relation.publisherversionhttps://doi.org/10.3390/ma13173660es
dc.identifier.doi10.3390/ma13173660es
dc.journaltitleMaterialses
dc.publication.volumen13es
dc.publication.issue17es
dc.publication.initialPageArticle number 3660es
dc.contributor.funderGobierno de Españaes

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