FE implementation of directional distortional hardening model for metal plasticity

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F14%3A00439567" target="_blank" >RIV/61388998:_____/14:00439567 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

FE implementation of directional distortional hardening model for metal plasticity

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

FE implementation of directional distortional hardening model for metal plasticity

Popis výsledku anglicky

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

Druh

O - Ostatní výsledky

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

—

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů