Normal contact stiffness model considering 3D surface topography and actual contact status
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Published:2021-02-01
Issue:1
Volume:12
Page:41-50
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ISSN:2191-916X
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Container-title:Mechanical Sciences
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language:en
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Short-container-title:Mech. Sci.
Author:
Zhu Linbo,Chen Jian,Zhang Zaoxiao,Hong Jun
Abstract
Abstract. A normal contact stiffness model considering 3D topography and elastic–plastic contact of rough surfaces is presented in this paper. The asperities are generated from the measured surfaces using the watershed segmentation and a modified nine-point rectangle. The topography parameters, including the asperity locations, heights, and radii of the summit, are obtained. Asperity shoulder–shoulder contact is considered. The relationship of the contact parameters, such as the contact force, the deformation, and the mean separation of two surfaces, is modelled in the three different contact regimes, namely elastic, elastic–plastic and fully plastic. The asperity contact state is determined, and if the contact occurs, the stiffness of the single asperity pair is calculated and summed as the total normal stiffness of two contact surfaces. The developed model is validated using experimental tests conducted on two types of specimens and is compared with published theoretical models.
Funder
National Basic Research Program of China Fundamental Research Funds for the Central Universities National Natural Science Foundation of China China Postdoctoral Science Foundation
Publisher
Copernicus GmbH
Subject
Industrial and Manufacturing Engineering,Fluid Flow and Transfer Processes,Mechanical Engineering,Mechanics of Materials,Civil and Structural Engineering,Control and Systems Engineering
Reference24 articles.
1. Abbott, E. J. and Firestone, F. A.: Specifying surface quality-a method based on accurate measurement and comparison, J. Mech. Eng., 55, 572–596, 1933. 2. Chang, W., Etsion, I., and Bogy, D.: An elastic-plastic model for the contact of rough surfaces, J. Tribol, 109, 257–263, 1987. 3. Ciavarella, M., Delfine, V., and Demelio, V.: A new 2D asperity model with interaction for studying the contact of multiscale rough random profiles, Wear, 261, 556–567, https://doi.org/10.1016/j.wear.2006.01.028, 2006. 4. Ciulli, E., Ferreira, L. A., Pugliese, G., and Tavares, S. M. O.: Rough contacts between actual engineering surfaces: Part I. Simple models for roughness description, Wear, 264, 1105–1115, https://doi.org/10.1016/j.wear.2007.08.024, 2008. 5. Ghaednia, H., Wang, X., Saha, S., Xu, Y., Sharma, A., and Jackson, R. L.: A Review of Elastic–Plastic Contact Mechanics, Appl. Mech. Rev., 69, 060804, https://doi.org/10.1115/1.4038187, 2017.
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