Open AccessEffect of Welding Sequence on Welding Deformation and Re-sidual Stress of Ear Plate Structure
Author(s) -
Guizhi Zhang,
Liping Zhang,
Song Lin Huang,
Hao Cheng
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/295/3/032101
Subject(s) - welding , residual stress , materials science , finite element method , deformation (meteorology) , structural engineering , stress (linguistics) , heat affected zone , sequence (biology) , mechanical engineering , composite material , engineering , chemistry , linguistics , philosophy , biochemistry
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.