@inproceedings{11ce6e1fe3f840b3bf36258eb7520be1,
title = "Numerical Simulation and Experimental Study of Welding in Liquid Rocket Engine Pipe",
abstract = "The liquid rocket engine pipe is mostly welded, which makes it easy to fail under the residual stress and strain after welding. This paper establishes a numerical welding model for liquid rocket engine pipe in order to accurately predict the welding temperature field and structural field, so as to investigate the method of improving the welding quality and mitigating structural failure. The model uses a Gaussian moving hemispherical heat source, which is embedded in the 3-D finite element thermal elastic-plastic coupling analysis through a subprogram. The transient welding temperature, stress and strain distributions are calculated considering the phases of preheating, welding and cooling. Then, the temperatures and residual stresses calculated by the simulation are compared with those of the experiment. It is shown that the numerical model is accurate. Based on the verified welding model, this paper analyses the influence of welding parameters. The results indicate that increasing the heat source power is beneficial to reducing the residual stress on the premise of ensuring the welding quality.",
keywords = "Experiment, Liquid rocket engine pipe, Numerical simulation, Residual stress, Welding",
author = "Hanyang Shi and Junjie Lv and Qingcheng Zhu and Dahua Du and Jun Wang and Ping Jin",
note = "Publisher Copyright: {\textcopyright} 2025 The Authors.; 15th International Conference on Mechanical and Aerospace Engineering, ICMAE 2024 ; Conference date: 17-07-2024 Through 20-07-2024",
year = "2025",
month = jun,
day = "16",
doi = "10.3233/ATDE250340",
language = "英语",
series = "Advances in Transdisciplinary Engineering",
publisher = "IOS Press BV",
pages = "221--232",
editor = "Pasquale Daponte",
booktitle = "Mechanical and Aerospace Engineering - Proceedings of the 15th International Conference, ICMAE 2024",
address = "荷兰",
}