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Open AccessArticle
Damage Mechanism Analysis of the Connecting Screw of Turbine Disk-Drum Assembly
by
Haijun Wang
Haijun Wang 1,
Shengxu Wang
Shengxu Wang 2,
Pu Xue
Pu Xue 1,
Yongxin Guo
Yongxin Guo 2 and
Liang Jiang
Liang Jiang 2,*
1
School of Aeronautics, Northwestern Polytechnical University, 127 Friendship West Road, Xi’an 710072, China
2
College of Automation, Wuxi University, 333, Xishan Road, Wuxi 214105, China
*
Author to whom correspondence should be addressed.
Machines 2024, 12(7), 489; https://doi.org/10.3390/machines12070489 (registering DOI)
Submission received: 12 June 2024
/
Revised: 17 July 2024
/
Accepted: 18 July 2024
/
Published: 19 July 2024
Abstract
The turbine disk-drum is one of the key components of an aero-engine and its assembly is connected with high-strength refined screws. But due to the uncoordinated rotation and deformation, the screws have abnormal wear damage. Through detailed contact stress analysis of screw body and component level using the finite element method, combined with experimental observation, the mechanism of wear damage of screw surface in screws is determined. It mainly includes the following: Firstly, the finite element method is used to calculate the deformation and stress distribution of the connecting screw of the turbine disk-drum assembly. Then, after the overspeed test, the morphology of the screws disassembled from the disk-drum assembly is evaluated. It was found that the wear degree in the circumferential direction and axial direction of the screw was quite different, that is, the screw wear experiment was consistent with the finite element analysis results. Finally, the influence of different rotation states and screw tightening states on screw wear was compared and analyzed. Conclusions obtained in this paper will be helpful to improve the assembly reliability of turbine drum.
Share and Cite
MDPI and ACS Style
Wang, H.; Wang, S.; Xue, P.; Guo, Y.; Jiang, L.
Damage Mechanism Analysis of the Connecting Screw of Turbine Disk-Drum Assembly. Machines 2024, 12, 489.
https://doi.org/10.3390/machines12070489
AMA Style
Wang H, Wang S, Xue P, Guo Y, Jiang L.
Damage Mechanism Analysis of the Connecting Screw of Turbine Disk-Drum Assembly. Machines. 2024; 12(7):489.
https://doi.org/10.3390/machines12070489
Chicago/Turabian Style
Wang, Haijun, Shengxu Wang, Pu Xue, Yongxin Guo, and Liang Jiang.
2024. "Damage Mechanism Analysis of the Connecting Screw of Turbine Disk-Drum Assembly" Machines 12, no. 7: 489.
https://doi.org/10.3390/machines12070489
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