Simulation and mechanism analysis of fretting wear of parallel groove clamps in distribution networks caused by Karman vortex vibration
Industrial Lubrication and Tribology
ISSN: 0036-8792
Article publication date: 10 September 2024
Issue publication date: 29 October 2024
Abstract
Purpose
The phenomenon of friction and wear in parallel groove clamps under wind vibration in 10 kV distribution networks represents a significant challenge that can lead to their failure. This study aims to elucidate the wear mechanism of parallel groove clamps under wind-induced vibration through simulation and experimentation.
Design/methodology/approach
FLUENT software was used to simulate the flow around the conductor and the parallel groove fixture, and the Karman vortex street phenomenon was discussed. The stress fluctuations of each component under breeze vibration conditions were investigated using ANSYS, and fretting experimentations were conducted at varying amplitudes.
Findings
The results demonstrate that the impact of breeze vibration on the internal stress of the parallel groove clamps is considerable. The maximum stress observed on the lower clamping block was found to be up to 300 MPa. As wind speed increased, the maximum vibration frequency was observed to reach 72.6 Hz. Concurrently, as the vibration amplitude increased, the damage in the contact zone of the lower clamping block also increased, with the maximum contact resistance reaching 78.0 µO at a vibration amplitude of 1.2 mm. This was accompanied by a shift in the wear mechanism from adhesive wear to oxidative wear and fatigue wear.
Originality/value
This study presents a comprehensive analysis of the fretting wear phenomenon associated with parallel groove clamps under wind vibration. The findings provide a reference basis for the design and protection of parallel groove clamps.
Keywords
Acknowledgements
The authors would like to thank Prof. Wang Wei of the Hefei University of Technology for helpful discussions on topics related to this work.
This work was supported by the Science and Technology Project of State Grid Corporation of China under Grant 5400-202420193A-1-1-ZN, 2024-2026, and Natural Science Foundation of Anhui Province, 2308085ME157, 2023-2026.
Citation
Feng, Y., Wu, S., Nie, H., Peng, C. and Wang, W. (2024), "Simulation and mechanism analysis of fretting wear of parallel groove clamps in distribution networks caused by Karman vortex vibration", Industrial Lubrication and Tribology, Vol. 76 No. 9, pp. 1108-1116. https://doi.org/10.1108/ILT-07-2024-0243
Publisher
:Emerald Publishing Limited
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