Effect of kinematic hardening on localized necking in substrate-supported metal layers

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dc.contributor.author BEN BETTAIEB, Mohamed
ensam.hal.laboratories
  178323 Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
  243747 Labex DAMAS
dc.contributor.author ABED-MERAIM, Farid
ensam.hal.laboratories
  178323 Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
  243747 Labex DAMAS
dc.date.accessioned 2017-06-19T09:09:06Z
dc.date.available 2017-10-01T00:46:03Z
dc.date.issued 2017
dc.date.submitted 2017-06-18T09:23:42Z
dc.identifier.issn 0020-7403
dc.identifier.uri http://hdl.handle.net/10985/11855
dc.description.abstract Prediction of necking limits in thin substrate-supported metal layers, which are typically used as functional components in electronic devices, represents nowadays an ambitious challenge. The specific purpose of the current work is, first, to numerically investigate the effect of kinematic hardening on localized necking in a
freestanding metal layer. Second, the impact of adding a substrate layer on the ductility evolution of the resulting elastomer/metal bilayer will be analyzed. The materials in the metal and substrate layers are assumed to be isotropic, incompressible and strain-rate independent. The behavior of the metal layer is described by a rigid–plastic model with mixed (isotropic and kinematic) hardening. The isotropic hardening contribution is
modeled by the Hollomon law, while kinematic hardening is modeled by the Armstrong–Frederick law. The substrate layer is made of elastomer material whose mechanical behavior is assumed to be hyperelastic and
modeled by a neo-Hookean constitutive law. The Marciniak–Kuczynski imperfection analysis is used to predict plastic flow localization. Through various numerical simulations, the influence of kinematic hardening on localized necking as well as the impact of the addition of an elastomer layer are specifically emphasized.
Comparisons with experimental results are also carried out to assess the relevance of incorporating kinematic hardening in the constitutive modeling of freestanding metal sheets.
en
dc.language.iso en
dc.publisher ELSEVIER
dc.rights Post-print
dc.subject Freestanding metal layer en
dc.subject Elastomer/metal bilayer en
dc.subject Localized necking en
dc.subject Kinematic hardening en
dc.subject Marciniak–Kuczynski analysis en
dc.title Effect of kinematic hardening on localized necking in substrate-supported metal layers en
ensam.hal.id hal-01541500 *
ensam.hal.status accept *
ensam.embargo.terms 2017-10
dc.identifier.doi 10.1016/j.ijmecsci.2016.12.002
dc.typdoc Articles dans des revues avec comité de lecture
dc.localisation Centre de Metz
dc.subject.hal Sciences de l'ingénieur: Mécanique
ensam.audience Internationale
ensam.page 177-197
ensam.journal Effect of kinematic hardening on localized necking in substrate-supported metal layers
ensam.volume 123
ensam.peerReviewing Oui

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