Surface plasticity: theory and computation

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buir.contributor.authorJavili, Ali
dc.citation.epage634en_US
dc.citation.issueNumber4en_US
dc.citation.spage617en_US
dc.citation.volumeNumber62en_US
dc.contributor.authorEsmaeili, A.en_US
dc.contributor.authorSteinmann P.en_US
dc.contributor.authorJavili, Alien_US
dc.date.accessioned2018-04-12T10:42:04Z
dc.date.available2018-04-12T10:42:04Z
dc.date.issued2018en_US
dc.departmentDepartment of Mechanical Engineeringen_US
dc.description.abstractSurfaces of solids behave differently from the bulk due to different atomic rearrangements and processes such as oxidation or aging. Such behavior can become markedly dominant at the nanoscale due to the large ratio of surface area to bulk volume. The surface elasticity theory (Gurtin and Murdoch in Arch Ration Mech Anal 57(4):291–323, 1975) has proven to be a powerful strategy to capture the size-dependent response of nano-materials. While the surface elasticity theory is well-established to date, surface plasticity still remains elusive and poorly understood. The objective of this contribution is to establish a thermodynamically consistent surface elastoplasticity theory for finite deformations. A phenomenological isotropic plasticity model for the surface is developed based on the postulated elastoplastic multiplicative decomposition of the surface superficial deformation gradient. The non-linear governing equations and the weak forms thereof are derived. The numerical implementation is carried out using the finite element method and the consistent elastoplastic tangent of the surface contribution is derived. Finally, a series of numerical examples provide further insight into the problem and elucidate the key features of the proposed theory. © 2017 Springer-Verlag GmbH Germany, part of Springer Natureen_US
dc.identifier.doi10.1007/s00466-017-1517-xen_US
dc.identifier.eissn1432-0924
dc.identifier.issn0178-7675
dc.identifier.urihttp://hdl.handle.net/11693/36487
dc.language.isoEnglishen_US
dc.publisherSpringeren_US
dc.relation.isversionofhttp://dx.doi.org/10.1007/s00466-017-1517-xen_US
dc.source.titleComputational Mechanicsen_US
dc.subjectFinite element methoden_US
dc.subjectSurface elasticityen_US
dc.subjectSurface plasticityen_US
dc.titleSurface plasticity: theory and computationen_US
dc.typeArticleen_US
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