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dc.contributor.authorAliguer Piferrer, Ignasi
dc.contributor.authorCarol, Ignacio
dc.contributor.authorSture, S.
dc.description.abstractIn this paper, Perzyna-type viscoplastic rate equations are integrated for a time step by considering the step as stress-driven. Depending on how the increment is imposed (constant, linear etc.), different strategies arise. The secant compliance is obtained by truncated expansion of the yield function. The viscoplastic model can be applied to materials exhibiting rate-dependent behavior, but it can also be used to recover an inviscid elastoplasticity solution when stationary conditions are reached. Within this framework, a viscoplastic relaxation iterative strategy is developed, relating the iterations with the fictitious time steps. Some examples of application are presented in the context of the Finite Element Method with zero-thickness interface elements for slope and stability problems with discontinuities.
dc.format.extent10 p.
dc.rightsOpen Access
dc.subjectÀrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica::Mètodes en elements finits
dc.subject.lcshFinite element method
dc.subject.lcshPlasticity -- Mathematical models
dc.subject.otherViscoplasticity, Viscoplasticrelaxation, FEM, Interfaceelements
dc.titleOn integration strategies for perzyna-type viscoplasticity, and application to zero-thickness interface elements
dc.typeConference report
dc.subject.lemacElements finits, Mètode dels
dc.subject.lemacPlasticitat -- Models matemàtics
dc.rights.accessOpen Access
local.citation.contributorCOMPLAS XII
local.citation.publicationNameCOMPLAS XII : proceedings of the XII International Conference on Computational Plasticity : fundamentals and applications

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