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Study on rheological properties of aviation lubricating oil under conditions of heavy load, high speed, and high temperature

Zhen Li (MIIT Key Laboratory of Aerospace Bearing Technology and Equipment, Harbin Institute of Technology, Harbin, Heilongjiang, China)
Xiaoli Zhao (MIIT Key Laboratory of Aerospace Bearing Technology and Equipment, Harbin Institute of Technology, Harbin, Heilongjiang, China)
Dezhi Zheng (MIIT Key Laboratory of Aerospace Bearing Technology and Equipment, Harbin Institute of Technology, Harbin, Heilongjiang, China)
Tingjian Wang (College of Mechanical Engineering, Tianjin University of Technology and Education, Tianjin, China and School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, China)
Le Gu (MIIT Key Laboratory of Aerospace Bearing Technology and Equipment, Harbin Institute of Technology, Harbin, Heilongjiang, China)
Liqin Wang (MIIT Key Laboratory of Aerospace Bearing Technology and Equipment, Harbin Institute of Technology, Harbin, Heilongjiang, China and State Key Laboratory of Robotics and Systems, Harbin Institute of Technology, Harbin, Heilongjiang, China)

Industrial Lubrication and Tribology

ISSN: 0036-8792

Article publication date: 3 April 2019

Issue publication date: 7 May 2019

234

Abstract

Purpose

This study aims to evaluate the rheological properties of aviation lubricating oil under conditions of heavy load, high speed and high temperature and the applicability of the classical rheological model under severe conditions.

Design/methodology/approach

A Chinese aviation lubricating oil was used and its traction curves were obtained using a new two-disk tribotester. Its rheological parameters were calculated based on empirical formulae. Moreover, the traction force was calculated based on the classical Eyring rheological model.

Findings

The traction curves are obtained with respect to contact pressure, temperature and rolling speed. The rheological parameters are significantly influenced by environmental factors, especially viscosity. The traction force calculated using the Eyring model is consistent with the experimental results.

Originality/value

A novel two-disk tribotester was designed using a gas bearing and speed–force closed-loop control to ensure measurement accuracy. The mechanism of rheological properties was analyzed and the applicability of the classical rheological model under severe conditions was verified. It provided an experimental and theoretical basis for expanding the application of classical rheological models under extreme conditions.

Keywords

Acknowledgements

The authors want to thank the National Key Research and Development Program (2018YFB0703804), National Natural Science Foundation of China (U1637206) and Tianjin Municipal Education Commission (2017KJ103).

Citation

Li, Z., Zhao, X., Zheng, D., Wang, T., Gu, L. and Wang, L. (2019), "Study on rheological properties of aviation lubricating oil under conditions of heavy load, high speed, and high temperature", Industrial Lubrication and Tribology, Vol. 71 No. 4, pp. 525-531. https://doi.org/10.1108/ILT-09-2018-0345

Publisher

:

Emerald Publishing Limited

Copyright © 2019, Emerald Publishing Limited

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