Fractal model of thermal contact conductance of rough surfaces based on elliptical asperity
Industrial Lubrication and Tribology
ISSN: 0036-8792
Article publication date: 19 April 2023
Issue publication date: 9 May 2023
Abstract
Purpose
The purpose of this study is to present a fractal model of thermal contact conductance of rough surfaces based on elliptical asperity.
Design/methodology/approach
The effects of contact load, fractal dimensional, fractal roughness and eccentricity on thermal contact conductance of rough surfaces were investigated by using numerical simulation.
Findings
The results indicate that the thermal contact conductance of rough surfaces increases with the increase of the contact load, increases with the increase of the fractal dimension and decreases with the increase of the fractal roughness. The thermal contact conductance of rough surfaces increases with the increase of eccentricity. The shape of the asperity of rough surfaces has an important influence on the thermal contact conductance of rough surfaces.
Originality/value
A fractal model of thermal contact conductance of rough surfaces based on elliptical asperity was established in this study. The achievements of this study provide some theoretical basis for the investigation of thermal contact conductance of bolted joint surfaces.
Keywords
Citation
Sun, X. and Xing, W. (2023), "Fractal model of thermal contact conductance of rough surfaces based on elliptical asperity", Industrial Lubrication and Tribology, Vol. 75 No. 4, pp. 424-431. https://doi.org/10.1108/ILT-02-2023-0035
Publisher
:Emerald Publishing Limited
Copyright © 2023, Emerald Publishing Limited