Original title: Implicit constitutive solution scheme for Mohr-Coulomb plasticity
Authors: Sysala, Stanislav ; Čermák, M.
Document type: Papers
Conference/Event: Programs and Algorithms of Numerical Mathematics /18./, Janov nad Nisou (CZ), 20160619
Year: 2017
Language: eng
Abstract: This contribution summarizes an implicit constitutive solution\nscheme of the elastoplastic problem containing the Mohr-Coulomb yield cri-\nterion, a nonassociative \now rule, and a nonlinear isotropic hardening. The\npresented scheme builds upon the subdifferential formulation of the \now rule\nleading to several improvements. Mainly, it is possible to detect a position\nof the unknown stress tensor on the Mohr-Coulomb pyramid without blind\nguesswork. Further, a simplifed construction of the consistent tangent opera-\ntor is introduced. The presented results are important for an efficient solution\nof incremental boundary value elastoplastic problems.
Keywords: consistent tangent operator; implicit constitutive solution scheme; Mohr-Coulomb plasticity
Project no.: LQ1602 (CEP)
Funding provider: GA MŠk
Host item entry: Programs and algorithms of numerical mathematics 18, ISBN 978-80-85823-67-7

Institution: Institute of Geonics AS ČR (web)
Document availability information: Fulltext is available at external website.
External URL: http://panm18.math.cas.cz/PANM18_proceedings.pdf
Original record: http://hdl.handle.net/11104/0277915

Permalink: http://www.nusl.cz/ntk/nusl-369666


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