HU Yingcan, WANG Qiuying, QIU Peixian, et al.Numerical Simulation Analysis of Residual Stress in SMA490BW Welding and Post-Weld Heat Treatment[J].Electric Welding Machine, 2024, 54(2): 77-82.
HU Yingcan, WANG Qiuying, QIU Peixian, et al.Numerical Simulation Analysis of Residual Stress in SMA490BW Welding and Post-Weld Heat Treatment[J].Electric Welding Machine, 2024, 54(2): 77-82. DOI: 10.7512/j.issn.1001-2303.2024.02.12.
Numerical Simulation Analysis of Residual Stress in SMA490BW Welding and Post-Weld Heat Treatment
SMA490BW weathering steel is usually joined by welding. Residual stress will be generated during the welding process
which has a great impact on engineering application. In industry
annealing heat treatment is often used to reduce residual stress. This paper establishes a finite element model of the welding process and post-weld heat treatment process of SMA490BW
the finite element simulation of the residual stress field of welding and post-weld heat treatment were carried out
and it was proven correct through test. By introducing the CREEP constitutive model of the material
the Norton-Bailey exponential equation is used to simulate the creep behavior of the material during post-weld heat treatment
and the effect of heat treatment on the welding residual stress is obtained. The research results show that: using the CREEP constitutive model
introducing the creep behavior of material can better simulate the stress and strain changes during the post-weld heat treatment of the welded workpiece
and the simulated residual stress values are in good agreement with the measured values.
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