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A new strain hardening model for rate-dependent crystal plasticity |
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| Authors: | Abhijit P. Brahme Kaan Inal Raja K. Mishra Shigeo Saimoto |
| Affiliation: | 1. Mechanics and Mechatronics Engineering, University of Waterloo, 200 University Avenue West, Waterloo, ON, Canada N2L 3G1;2. General Motors Research and Development Center, 3500 Mound Rd., Warren, MI 48090-9055, USA;3. Mechanical and Materials Engineering, Queen’s University, 60 Union Street, Kingston, ON, Canada K7L 3N6;1. TU Dortmund, Institute of Mechanics, Leonhard-Euler-Str. 5, D-44227 Dortmund, Germany;2. Helmholtz-Zentrum Geesthacht, Institute of Materials Research, Materials Mechanics, D-21502 Geesthacht, Germany;3. Faculty of Engineering, Department of Engineering Mechanics, Vukovarska 58, HR-51000 Rijeka, Croatia;1. National Research Tomsk State University, Lenin Avenue, 36, Tomsk 634050, Russia;2. National Research Tomsk Polytechnic University, Lenin Avenue, 30, Tomsk 634050, Russia;3. Institute of Strength Physics and Materials Science, Siberian Branch of the Russian Academy of Sciences, pr. Akademicheskii 2/4, Tomsk 634021, Russia |
| Abstract: | This paper presents a crystal plasticity based finite element analysis employing the new microstructure-based strain hardening model recently presented by Saimoto and Van Houtte (2011) [7] to simulate formability and texture evolution in the commercial aluminum alloy 5754. Simulations are performed to compare the predictive capability of the new hardening model against the common work hardening models using a rate-dependent plasticity formulation. The parameters in the numerical models are calibrated using the X-ray data published by Iadicola et al. (2008) [9] for the aluminum sheet alloy 5754. The predictions of the model for balanced biaxial tension and in-plane plane-strain tests are compared against experimental observations presented in Iadicola et al. (2008) [9]. It is concluded that the new model provides the best predictions of the large strain behavior of Aluminum sheet alloy 5754 subjected to various strain paths. |
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