Numerical simulation of residual stress field of stud girth weld in low temperature environment
In order to study the influence of low temperature environment on the distribution law of welding residual stress,a stud model through ABAQUS for numerical simulation was established,and 5 different temperatures for finite element thermal-solid coupling analysis were considered.The results show that the maximum values of mises stress and radial residual stress are both located at 10 mm near the weld,and decay rapidly with the increase of distance;the hoop residual stress is residual tensile stress near the weld,and is compressive stress away from the weld,and the maximum value is located in the center of the weld;low temperature will increase the residual stress of the weld,the mises stress is concentrated in the center of the weld,the hoop residual stress is concentrated near the weld,and the radial residual stress increases both in the center of the weld and near the weld.The low temperature has a significant effect on increasing the residual tensile stress of welding,but has little effect on the residual compressive stress.
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