Influence of Welding Sequence on Welding Residual Stress and Deformation of Lateral Stop

doi:10.3901/JME.2019.24.057

Abstract

Abstract: The influence of welding sequence on residual stress and welding deformation of welding of lateral stop were studied by numerical simulation and experiment.Based on Sysweld software platform, the temperature field and stress and strain of lateral stop welding are calculated. Set up two kinds of positioning welding sequence and two kinds of assembling welding sequence, and get four kinds of welding schemes by means of arrangement and combination.Through numerical simulation and experimental comparison, it is found that for the stress situation, the positioning welding sequence has little influence on the distribution of welding residual stress, while the welding sequence of assembly welding plays a major role in the influence of the maximum residual stress of lateral stop.In terms of deformation, the lateral stop in the X and Z direction has the largest deformation amount, about 1.2 mm, while the lateral stop in the Y direction has the smallest deformation amount, about 0.5 mm. The welding method of scheme 4 can effectively control the welding residual stress and welding deformation.

Key words: welding sequence, lateral stop, residual stress, welding deformation

CLC Number:

TG404

LIU Yang, JIANG Bin, WANG Huizi, AN Bo, YANG Xinhua. Influence of Welding Sequence on Welding Residual Stress and Deformation of Lateral Stop[J]. Journal of Mechanical Engineering, 2019, 55(24): 57-65.

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