FE implementation of directional distortional hardening model for metal plasticity

Result code in IS VaVaI
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Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
FE implementation of directional distortional hardening model for metal plasticity
Original language description
As seen in numerous experiments, yield surfaces change their shape and location during plastic straining. Several models of directional distortional hardening to capture such behavior have been proposed recently. Their application lies in sheet metal forming processes, in combined ratchetting, or in any application containing sequenced non-proportional plastic straining. The presented work outlines and tests the finite element implementation of the simpliest form of directional distortional hardening models proposed by Feigenbaum and Dafalias (2008), which involves a fixed scalar distortional parameter. The evolution equations are based on the Armstrong-Frederick evanescent memory type hardening rule. The associative flow rule is adopted. Properties ofthe model are thoroughly studied in connection to convexity condition and later to numerical stability. The explicit integration scheme with subincrementation, the tangent stiffness-radial corrector method, is employed. Size limitations
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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