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Size effects on the plastic shock formation in steady-state cavity expansion in porous ductile materials

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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.authorDos Santos, Tiago
dc.contributor.authorRodriguez Martinez, Jose Antonio
dc.contributor.funderEuropean Commissiones
dc.date.accessioned2021-05-20T11:54:11Z
dc.date.available2023-04-01T23:00:05Z
dc.date.issued2021-04
dc.description.abstractIn this paper, we have studied the hypervelocity expansion of a spherical cavity in an infinite medium modeled with the extension of the porous plasticity criterion of Gurson (1977) developed by Chen and Yuan (2002) to account for plastic strain gradient induced size effects. Following the self-similar, steady-state solution derived by Cohen and Durban (2013) for size-independent porous materials, we have computed the critical cavity expansion velocity which leads to the emergence of plastic shock waves for a wide range of initial void volume fractions and different values of the length scale parameter that controls the effect of size. We have shown that size effects hinder the emergence of plastic shock waves, so that as the length scale parameter increases, the expansion velocity required for the plastic shock to be formed increases. In addition, while porosity favors the formation of plastic shocks, as shown by Cohen and Durban (2013), our results indicate that the effect of initial void volume fraction on plastic shock wave formation decreases for size-dependent materials.en
dc.description.sponsorshipTdS wishes to acknowledge the support of FAPERGS, Fundaçã de Amparo à Pesquisa do Estado do Rio Grande do Sul, grant agreement 19/2551-0001054-0. JAR-M acknowledges the financial support obtained from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme. Project PURPOSE, grant agreement 758056.en
dc.format.extent8
dc.identifier.bibliographicCitationdos Santos, T. & Rodríguez-Martínez, J. (2021). Size effects on the plastic shock formation in steady-state cavity expansion in porous ductile materials. Mechanics Research Communications, vol. 113, 103690. https://doi.org/10.1016/j.mechrescom.2021.103690en
dc.identifier.doihttps://doi.org/10.1016/j.mechrescom.2021.103690
dc.identifier.issn0093-6413
dc.identifier.publicationfirstpage1
dc.identifier.publicationissue103690
dc.identifier.publicationlastpage8
dc.identifier.publicationtitleMechanics Research Communicationsen
dc.identifier.publicationvolume113
dc.identifier.urihttps://hdl.handle.net/10016/32706
dc.identifier.uxxiAR/0000027545
dc.language.isoeng
dc.publisherElsevier
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/GA-758056
dc.rights© 2021 Elsevier Ltd.
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.accessRightsopen access
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subject.ecienciaIngeniería Mecánicaes
dc.subject.otherDynamic cavity expansionen
dc.subject.otherPorous plasticityen
dc.subject.otherSize effectsen
dc.subject.otherPlastic shock wavesen
dc.titleSize effects on the plastic shock formation in steady-state cavity expansion in porous ductile materialsen
dc.typeresearch article*
dc.type.hasVersionAM*
dspace.entity.typePublication
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