| METALS AND METAL MATRIX COMPOSITES |
|
|
|
|
|
| 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.
|
|
Published: 10 July 2025
Online: 2025-07-21
|
|
|
|
|
1 Ruan H. Study on mechanical and fatigue properties of aluminum alloy welded joint considering welding residual stress. Master’s Thesis, Jiangsu University of Science and Technology, China, 2021(in Chinese).
阮浩. 考虑焊接残余应力的铝合金焊接接头力学和疲劳性能研究. 硕士学位论文, 江苏科技大学, 2021.
2 Zhang Y, Chen J S, Zhou B, et al. Electric Welding Machine, 2023, 53(5), 21 (in Chinese).
张杨, 陈捷狮, 周斌, 等. 电焊机, 2023, 53(5), 21.
3 Zeng Z, Wang L J. Aviation Manufacturing Technology, 2008(8), 44 (in Chinese).
曾志, 王立君. 航空制造技术, 2008(8), 44.
4 Shen C N. Welding distortion prediction and residual stress evaluation of stiffened cylindrical shell structure. Master’s Thesis, Huazhong University of Science and Technology, China, 2022(in Chinese).
申超男. 加筋圆柱壳结构的焊接变形预测与残余应力评估. 硕士学位论文, 华中科技大学, 2022.
5 Feng C. Numerical simulation of heat transfer and dynamics in molten pool of high speed tandem TIG welding. Master’s Thesis, Shandong University, China, 2020(in Chinese).
冯超. 列置双TIG电弧高速焊接熔池传热与流动行为数值分析. 硕士学位论文, 山东大学, 2020.
6 Chen L L. Multi-scale modeling and simulation of microstructure evolution during tungsten inert gas welding of nickel-based alloy based on cellular automata method. Master’s Thesis, Nanjing University of Aeronautics and Astronautics, China, 2020(in Chinese).
陈莉莉. 基于CA法镍基合金TIG焊接接头组织的多尺度模拟. 硕士学位论文, 南京航空航天大学, 2020.
7 Ji L S, Ling Z M, He J. Mechanical Engineering Materials, 2015, 39(12), 67 (in Chinese).
姬丽森, 凌泽民, 何建. 机械工程材料, 2015, 39(12), 67. |
|
|
|
渝公网安备50019002502923号 © Editorial Office of Materials Reports.
2025, Vol. 39 
