Abstract
To examine the influence of the groove shape of a friction disk on the transient temperature field in the engagement process of aviation wet friction clutch, a transient thermal analysis model of friction clutch was established, and the application method of thermal boundary conditions, including the calculation of convective heat transfer coefficient and heat flux density, was studied. The transient heat loading process was established by the partition method of friction disk and steel disk. The temperature characteristics of wet clutch friction pairs with different groove shapes during the engagement process were analyzed and tested on an SAE#2 testing machine. Results show that when the clutch is engaged, the temperature of the friction pair composed of two-way parallel groove, three-way parallel groove, and waffle groove friction disk increases continuously at first and finally decreases slightly; the highest temperature of the friction disk and steel disk is at the ring near the outer ring of the friction disk; and the waffle groove friction disk is more suitable for aviation wet friction clutch.
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Acknowledgments
This study was supported by the National Natural Science Foundation of China (51975274) and the National Key Laboratory of Science and Technology on Helicopter Transmission (Nanjing University of Aeronautics and Astronautics) (Grant No. HTL-O-20K01).
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Heyun Bao received her Ph.D. degree in Mechanical Engineering in Nanjing University of Aeronautics and Astronautics (NUAA) in 2007. She was a visiting scholar at University of Virginia (UVA) from 2015 to 2016. She is currently an Associate Professor of the National Key Laboratory of Science and Technology on Helicopter Transmission, NUAA. Her research interests are focused on helicopter transmission system, gear dynamics, rotor dynamic analysis, dynamic modelling, numerical simulations and thermal analysis.
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Bao, H., Kong, W., Hou, X. et al. Analysis on temperature field of friction pair of aviation friction clutch based on different groove shapes of friction disk. J Mech Sci Technol 35, 3735–3742 (2021). https://doi.org/10.1007/s12206-021-0742-6
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DOI: https://doi.org/10.1007/s12206-021-0742-6