Journal
COMPUTATIONAL MATERIALS SCIENCE
Volume 50, Issue 2, Pages 612-621Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.commatsci.2010.09.025
Keywords
Finite element analysis; Numerical simulation; Multi-pass welding; Residual stress
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A finite element approach based on Quick Welder software is developed to simulate welding temperature field and welding residual stress distribution in a 3D multi-pass girth-welded pipe model. The characteristics of welding residual stress distributions in a SUS304 stainless steel pipe induced by heating with a tungsten inert gas arc welding torch are investigated numerically. Meanwhile, an emphasis is focused on examining the welding residual stress distributions in and near the weld start/end location. Moreover, the residual stresses predicted by the present computational approach are compared with the measured data; and the comparison suggests that the numerical simulation method has basically captured the feature of welding residual stress distribution near the weld start/end region. The numerical simulation results show that both the hoop and the axial residual stresses near the weld start/end region have sharp gradients and are significantly different from those in the steady range. (C) 2010 Elsevier B.V. All rights reserved.
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