Wear law in mixed lubrication based on stress-promoted thermal activation

Xin PEI; Wei PU; Jialong YANG; Ying ZHANG

doi:10.1007/s40544-020-0365-4

Friction 2021, 9(4): 710-722 https://doi.org/10.1007/s40544-020-0365-4

Research Article |

Open Access | Issue | Published: 23 July 2020

Wear law in mixed lubrication based on stress-promoted thermal activation

Show Author's Information Hide Author's Information Xin PEI^¹, Wei PU^¹(

), Jialong YANG^¹, Ying ZHANG^²

1School of Aeronautics and Astronautics, Sichuan University, Chengdu 610065, China

2School of Manufacturing Science and Engineering, Sichuan University, Chengdu 610065, China

Keywords:

sliding wear, surface topography, mixed lubrication, Archard, Arrhenius

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PEI X, PU W, YANG J, et al. Wear law in mixed lubrication based on stress-promoted thermal activation. Friction, 2021, 9(4): 710-722. https://doi.org/10.1007/s40544-020-0365-4

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Abstract Full text About this article

Abstract

Although several empirical wear formulas have been proposed, theoretical approaches for predicting surface topography evolution during sliding wear are limited. In this study, we propose a novel wear-prediction method, wherein the energy-based Arrhenius equation is combined with a mixed elastohydrodynamic lubrication (EHL) model to predict the point-contact wear process in mixed lubrication. The surface flash temperature and contact pressure are considered in the wear model. Simulation results are compared with the experimental results to verify the theory. The surface topography evolutions are observed during the wear process. The influences of load and speed on wear are investigated. The simulation results based on the Arrhenius equation relationship shows good agreement with the results of experiments as well as the Archard wear formula. However, the Arrhenius equation is more accurate than the Archard wear theory in some aspects, such as under high-temperature conditions. The results indicate that combining the wear formulas with the mixed EHL simulation models is an effective method to study the wear behavior over time.

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Wear law in mixed lubrication based on stress-promoted thermal activation

Show Author's information Hide Author's Information Xin PEI^¹, Wei PU^¹(

), Jialong YANG^¹, Ying ZHANG^²

1School of Aeronautics and Astronautics, Sichuan University, Chengdu 610065, China

2School of Manufacturing Science and Engineering, Sichuan University, Chengdu 610065, China

Abstract

Keywords: sliding wear, surface topography, mixed lubrication, Archard, Arrhenius

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Acknowledgements

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Publication history

Received: 15 October 2019

Revised: 12 December 2019

Accepted: 16 January 2020

Published: 23 July 2020

Issue date: August 2021

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Acknowledgements

The authors acknowledge the support from the National Natural Science Foundation of China (NSFC) (51875369) and the Central Universities Funds (YJ201752). Wei PU would like to express his appreciation for Prof. Dong ZHU’s advice in the mixed EHL model.

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