Friction analysis of anisotropic surface for viscoelastic material
Industrial Lubrication and Tribology
ISSN: 0036-8792
Article publication date: 11 October 2021
Issue publication date: 28 October 2021
Abstract
Purpose
The anisotropic surfaces of viscoelastic materials play a role in sliding friction; the purpose of this paper is to study the effect of the anisotropic surfaces on contact area and the friction coefficient.
Design/methodology/approach
A complex elastic modulus and an anisotropic power spectrum are used to compute the coefficient of friction based on the extension Persson theory which considers the partial contact and the variation in the roughness slopes.
Findings
The ratios of the relative contact area that varies with velocity are obtained with different angles and eccentricities, and the effect of the elastic modulus needs to be considered. The coefficients of the friction parallel to the direction of motion decrease as the angle increases, or as the eccentricity decreases. The friction coefficients in the vertical direction change irregularly when the angles or eccentricities increase.
Originality/value
An extension of Persson’s work considering the partial contact and the effective mean square slope of the roughness is applied to study sliding friction, and the effect of the elastic modulus on contact area is considered.
Keywords
Acknowledgements
This work is supported by the National Key Research and Development Project (2018YFB2000200) and China Postdoctoral Fund Project (2019M662503).
Citation
Zhao, Y., Liu, H., Wang, N., Fan, B. and Li, M. (2021), "Friction analysis of anisotropic surface for viscoelastic material", Industrial Lubrication and Tribology, Vol. 73 No. 8, pp. 1113-1121. https://doi.org/10.1108/ILT-06-2021-0223
Publisher
:Emerald Publishing Limited
Copyright © 2021, Emerald Publishing Limited