Abstract
Non-proportionality of straining, initial texture and hardening have been investigated in a ferritic steel polycrystal within a crystal plasticity finite element framework. Two extreme forms of hardening are investigated; namely, isotropic latent-hardening and anisotropic self-hardening. Dislocation density evolutions on all independent slip systems have been calculated in order to investigate the establishment of dislocation distributions and evaluate their dependence on non-proportionality, hardening, texture and predicted ductility. The results show that non-proportionality effects are more pronounced under isotropic latenthardening as opposed to anisotropic self-hardening especially under non-proportional uniaxial strains.
Original language | English |
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Title of host publication | Computational Methods for Coupled Problems in Science and Engineering V - A Conference Celebrating the 60th Birthday of Eugenio Onate, COUPLED PROBLEMS 2013 |
Publisher | International Center for Numerical Methods in Engineering |
Pages | 275-286 |
Number of pages | 12 |
ISBN (Print) | 9788494140761 |
Publication status | Published - 2013 |
Event | 5th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2013 - Santa Eulalia, Ibiza Island, Spain Duration: 17 Jun 2013 → 19 Jun 2013 |
Conference
Conference | 5th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2013 |
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Country/Territory | Spain |
City | Santa Eulalia, Ibiza Island |
Period | 17/06/13 → 19/06/13 |
Keywords
- Dislocation distributions
- Forming limits
- Hardening
- Necking
- Non-proportionality
- Strain localization
- Texture