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The combined effect of plastic orthotropy and tension-compression asymmetry on the development of necking instabilities in flat tensile specimens subjected to dynamic loading

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dc.affiliation.dptoUC3M. Departamento de Mecánica de Medios Continuos y Teoría de Estructurases
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Nonlinear Solid Mechanicses
dc.contributor.authorN Souglo, Komi Espoir
dc.contributor.authorRodríguez-Martínez, José A.
dc.contributor.authorVaz-Romero, Álvaro
dc.contributor.authorCazacu, Oana
dc.contributor.funderEuropean Commissionen
dc.date.accessioned2019-01-21T15:44:28Z
dc.date.available2021-03-01T00:00:04Z
dc.date.issued2019-03-01
dc.description.abstractIn this paper we study, using finite element simulations, the combined effect of plastic orthotropy and tension-compression asymmmetry on the formation of necking instabilities in high-purity alfa-titanium flat tensile specimens subjected to dynamic loading under a wide range of impact velocities. To this end, the material behaviour is described using the constitutive model developed by Nixon et al. (2010a), which accounts for these specific features of the plastic response of hexagonal-close-packed materials. While numerical studies have shown the effect of material properties and loading conditions on the formation and development of necking instabilities in dynamically loaded tensile specimens, none of them, to the best of our knowledge, has considered the plastic orthotropy and tension-compression asymmmetry of the material. The finite element simulations show that the orientation of the specimen with respect to the in-plane symmetry axes of the material plays a key role in the location and characteristics of the neck(s) formed in the sample. Moreover, the results indicate that only for three specimen orientations the main neck formed in the sample contains two localization bands, equally inclined with respect to the specimen axis, which grow at equal speed. For all other orientations, the localization bands have different inclinations, and one grows faster than the other one.en
dc.description.sponsorshipThe research leading to these results has received funding from the European Union's Horizon2020 Programme (Excellent Science, Marie-Sklodowska-Curie Actions) under REA grant agreement 675602 (Project OUTCOME). OC acknowledges the financial support obtained from the programme Cátedras de Excelencia UC3M-Santander during the academic year 2018-2019.en
dc.format.extent17es
dc.format.mimetypeapplication/pdf
dc.identifier.bibliographicCitationInternational journal of solids and structures, Vol. 159, pp. 272-288en
dc.identifier.doihttps://doi.org/10.1016/j.ijsolstr.2018.10.006
dc.identifier.issn0020-7683
dc.identifier.publicationfirstpage272es
dc.identifier.publicationlastpage288es
dc.identifier.publicationtitleINTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURESen
dc.identifier.publicationvolume159es
dc.identifier.urihttps://hdl.handle.net/10016/27946
dc.identifier.uxxiAR/0000022383
dc.language.isoengen
dc.publisherElsevier Ltd.en
dc.relation.datasethttps://doi.org/10.21950/HYCWIT
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/H2020/675602 (OUTCOME)en
dc.rights© 2018 Elsevier Ltd. All rights reserveden
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.accessRightsopen accessen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subject.ecienciaIngeniería Mecánicaes
dc.subject.otherDynamic tensile testen
dc.subject.otherDynamic neckingen
dc.subject.otherFinite element simulationsen
dc.subject.otherPlasticityen
dc.subject.otherOrthotropyen
dc.titleThe combined effect of plastic orthotropy and tension-compression asymmetry on the development of necking instabilities in flat tensile specimens subjected to dynamic loadingen
dc.typeresearch article*
dc.type.hasVersionAM*
dspace.entity.typePublication
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