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Computational model...
Computational modeling of inelastic large ratcheting strains
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- Johansson, Göran, 1975 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Ekh, Magnus, 1969 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Runesson, Kenneth, 1948 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2005
- 2005
- English.
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In: International Journal of Plasticity. ; 21:5, s. 955-980
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Abstract
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- A framework forphenomenological hyperelasto-plasticity with initial anisotropy,kinematic hardening as well as anisotropic damage is presented inMenzel et al. (2003a).In this contribution we exploit and extend this framework toinclude several back-stresses in order to capture the ratchettingresponse of polycrystalline metals subjected to cyclic stress withnon-zero mid-value. The evolution equations for kinematichardening resemble a linear combination of the multiple-Armstrong-Frederic and the Burlet-Cailletaudmodels, which are extended to the large strain setting. Thecapability of the model to capture various phenomenologicalcharacteristics, in particular multi-axial ratchetting, isillustrated by numerical examples. Comparisons with uni-axial andbi-axial experimental ratchetting results for carbon steel aregiven. Finally, the finite element analysis of a simplifiedrailway turnout component subjected to cyclic loading ispresented.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
Keyword
- Finite strains
- Kinematic hardening
- Anisotropy
- Plasticity
- Ratcheting
Publication and Content Type
- art (subject category)
- ref (subject category)
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