A fully coupled thermo-mechanical model of friction stir welding |
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Authors: | Z Zhang H W Zhang |
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Affiliation: | (1) State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian, 116024, China |
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Abstract: | This paper presents a new developed fully coupled thermo-mechanical model of the friction stir welding process. Results indicate
that the rotation of the shoulder can accelerate the material flow behavior near the top surface. The material deformation
and the temperature field can have relations with the microstructural evolution. The texture of the appearance of the friction
stir welds can correlate well with the equivalent plastic strain distributions on the top surface. The temperature field in
the friction stir welding process is approximately symmetric to the welding line. The material flows in different thicknesses
are different. The shoulder can have a significant effect on material behaviors on the top surface, but this effect is greatly
weakened when the material gets closer to the bottom surface of the welding plate. |
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Keywords: | Friction stir welding Finite element method Fully coupled thermo-mechanical model Equivalent plastic strain |
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