In this paper, intermediate modeling of polycrystalline plasticity is proposed for rigid viscoplatic large deformations. This approach is based on the use of a bicrystal as the elementary local element representing the polycrystal. The local homogenization is obtained by considering the bicrystal volume-averaging and the jump conditions at the assumed planar interface between the two crystals. Two interaction laws based on Taylor and Sachs type assumptions are proposed. These bicrystal-based averaging schemes are different from the classical Taylor and Sachs models since they allow for stresses and strains to vary from one single crystal to the other. We simulate uniaxial tension and compression as well as plane strain compression tests. Results in terms of stress-strain curves are shown in comparison to those of the pure Taylor and Sachs models. We also show results for texture evolution and discuss their comparison with the experimental measurements.
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January 2002
Technical Papers
Bicrystal-Based Modeling of Plasticity in FCC Metals
B. J. Lee,
B. J. Lee
Department of Civil Engineering, Feng Chia University, Taichung, Taiwan, ROC
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S. Ahzi,
S. Ahzi
University Louis Pasteur, IPST, IMFS-UMR7507, 15-17 Rue du Marechal Lefebvre, 67100 Strasbourg, France
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D. M. Parks
D. M. Parks
Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
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B. J. Lee
Department of Civil Engineering, Feng Chia University, Taichung, Taiwan, ROC
S. Ahzi
University Louis Pasteur, IPST, IMFS-UMR7507, 15-17 Rue du Marechal Lefebvre, 67100 Strasbourg, France
D. M. Parks
Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
Contributed by the Materials Division for publication in the JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY. Manuscript received by the Materials Division January 2, 2001; revised manuscript received June 21, 2001. Guest Editors: Mohammed Cherkaoui and La´szlo´ S. To´th.
J. Eng. Mater. Technol. Jan 2002, 124(1): 27-40 (14 pages)
Published Online: June 21, 2001
Article history
Received:
January 2, 2001
Revised:
June 21, 2001
Citation
Lee, B. J., Ahzi, S., and Parks, D. M. (June 21, 2001). "Bicrystal-Based Modeling of Plasticity in FCC Metals ." ASME. J. Eng. Mater. Technol. January 2002; 124(1): 27–40. https://doi.org/10.1115/1.1420196
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