Simulation of Single Cylinder Exhaust Pipe Welding and Process Optimization
DAI Hao1,2,†, HAN Haibo1,†, LIU Xiangbo1,*, GAO Yuanyang1, SUN Yanqiong1, CHI Jinhu1, WEI Yanhong1,3
1 College of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 211106, China 2 Changhe Aircraft Industry(Group) Co.,Ltd., Jingdezhen 333002, Jiangxi, China 3 Wuxi Research Institute, Nanjing University of Aeronautics and Astronautics, Wuxi 214187, Jiangsu, China
Abstract: The welded structure of helicopter thin-walled exhaust pipes is facing problems such as difficulty in assembly and short service life caused by welding residual stress and deformation. The thermal elastic-plastic finite element method was used to simulate and verify the tungsten inert gas (TIG) welding process of the GH3030 single-cylinder exhaust pipe, and optimization research was conducted by designing six welding processes for the two-pass weld of the exhaust pipe, to control the welding residual stress and post-weld deformation. The results show that the welding stress of the single-cylinder exhaust pipe welded by the welding sequence of first long and then short, and the process plan with the opposite welding direction is the smallest, and the post-weld deformation improvement effect is significant.
戴浩, 韩海波, 刘湘波, 高远洋, 孙燕琼, 池金虎, 魏艳红. 单筒排气管焊接有限元模拟及工序优化研究[J]. 材料导报, 2025, 39(13): 23110187-5.
DAI Hao, HAN Haibo, LIU Xiangbo, GAO Yuanyang, SUN Yanqiong, CHI Jinhu, WEI Yanhong. Simulation of Single Cylinder Exhaust Pipe Welding and Process Optimization. Materials Reports, 2025, 39(13): 23110187-5.
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2025, Vol. 39 
