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| rdf:type
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| 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 of the 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 of integration increments are discussed in a series of iso-error maps. The implementation is verified by a comparison of numerical results with analytical solutions pertinent to proportional load cases. Complex non-proportional loading paths are verified by a very fine numerical computation.
- 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 of the 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 of integration increments are discussed in a series of iso-error maps. The implementation is verified by a comparison of numerical results with analytical solutions pertinent to proportional load cases. Complex non-proportional loading paths are verified by a very fine numerical computation. (en)
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| Title
| - FE implementation of directional distortional hardening model for metal plasticity
- FE implementation of directional distortional hardening model for metal plasticity (en)
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| skos:prefLabel
| - FE implementation of directional distortional hardening model for metal plasticity
- FE implementation of directional distortional hardening model for metal plasticity (en)
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| skos:notation
| - RIV/61388998:_____/14:00439567!RIV15-GA0-61388998
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| http://linked.open...avai/riv/aktivita
| |
| http://linked.open...avai/riv/aktivity
| - I, P(GA101/09/1630), P(GAP201/10/0357), P(ME10024)
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| http://linked.open...vai/riv/dodaniDat
| |
| http://linked.open...aciTvurceVysledku
| |
| http://linked.open.../riv/druhVysledku
| |
| http://linked.open...iv/duvernostUdaju
| |
| http://linked.open...titaPredkladatele
| |
| http://linked.open...dnocenehoVysledku
| |
| http://linked.open...ai/riv/idVysledku
| - RIV/61388998:_____/14:00439567
|
| http://linked.open...riv/jazykVysledku
| |
| http://linked.open.../riv/klicovaSlova
| - plasticity; directional distortional dardening; numerical implementation; verification (en)
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| http://linked.open.../riv/klicoveSlovo
| |
| http://linked.open...ontrolniKodProRIV
| |
| http://linked.open...in/vavai/riv/obor
| |
| http://linked.open...ichTvurcuVysledku
| |
| http://linked.open...cetTvurcuVysledku
| |
| http://linked.open...vavai/riv/projekt
| |
| http://linked.open...UplatneniVysledku
| |
| http://linked.open...iv/tvurceVysledku
| - Parma, Slavomír
- Plešek, Jiří
- Hrubý, Zbyněk
- Marek, René
|
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