TY - JOUR
T1 - Modelling of entire friction stir welding process by explicit finite element method
AU - Yu, M.
AU - Li, W. Y.
AU - Li, J. L.
AU - Chao, Y. J.
PY - 2012
Y1 - 2012
N2 - A coupled thermomechanical three-dimensional finite element model was developed for friction stir welding in the ABAQUS environment using Johnson-Cook material law and Johnson-Cook failure model. The temperature evolution during the plunge, dwell and moving stages of a friction stir welded 7050 aluminium alloy and the effect of heat conduction by the back plate were investigated. Results show that the temperature almost symmetrically distributes across the plate cross-section, and the temperature contour in the weld nugget zone presents a V type shape after the plunge stage. In the dwell stage, the frictional heat conducts around to preheat the plate. While in the moving stage, the heat gradually accumulates until a quasi-stable temperature field is formed. Moreover, it is shown that the heat conduction through the back plate has a significant effect on the temperature field. With the increasing heat convective coefficient of the back plate, the temperature field remarkably shrinks
AB - A coupled thermomechanical three-dimensional finite element model was developed for friction stir welding in the ABAQUS environment using Johnson-Cook material law and Johnson-Cook failure model. The temperature evolution during the plunge, dwell and moving stages of a friction stir welded 7050 aluminium alloy and the effect of heat conduction by the back plate were investigated. Results show that the temperature almost symmetrically distributes across the plate cross-section, and the temperature contour in the weld nugget zone presents a V type shape after the plunge stage. In the dwell stage, the frictional heat conducts around to preheat the plate. While in the moving stage, the heat gradually accumulates until a quasi-stable temperature field is formed. Moreover, it is shown that the heat conduction through the back plate has a significant effect on the temperature field. With the increasing heat convective coefficient of the back plate, the temperature field remarkably shrinks
KW - 7050 aluminium alloy
KW - Explicit finite element analysis
KW - Friction stir welding
KW - Temperature field
UR - https://www.scopus.com/pages/publications/84863086672
U2 - 10.1179/1743284711Y.0000000087
DO - 10.1179/1743284711Y.0000000087
M3 - 文章
AN - SCOPUS:84863086672
SN - 0267-0836
VL - 28
SP - 812
EP - 817
JO - Materials Science and Technology
JF - Materials Science and Technology
IS - 7
ER -