Abstract

In this study, a three-dimensional finite element model of the welding process of the ear plate structure was established based on the thermal elastic-plastic method. The DOE method was used to design the welding sequence optimization scheme, and the effect of welding sequence on welding deformation and residual stress was studied. The results show that the variation of welding sequence has little effect on the residual stress of the ear plate structure, but has great influence on the post-weld deformation. Considering the field welding conditions, the reasonable welding sequence was determined finally, and it could meet the assembly design requirements of ear plate structure.

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