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Investigation of the contact performance of machined surface morphology.pdf
Tribology International 107 (2017) 125–134
Contents lists available at ScienceDirect
Tribology International
journal homepage: /locate/triboint
Investigation of the contact performance of machined surface morphology
Pengyang Lia,b,?, Yanfei Zhaia, Shikun Huanga, Quandai Wanga, Weiping Fua, Hongping Yangc
a Department of Mechanical Engineering and Automation, Xian University of Technology, Xian 710048, PR China b State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, PR China c Department of Mechanical and Electrical Engineering, Tianshui Normal University, Tianshui 741001, PR China
MARK
ARTICLE INFO
Keywords: Surfaces morphology Elasto-plastic contact Contact performance
ABSTRACT
Engineering practices have indicated that surface textures and topography greatly a?ect the mechanical performance of contact interfaces. The e?ect of machined surface morphologies on the contact performance results, including average surface gap, contact area ratio, and the volume of plastically deformed material, is investigated. Depending on the machined parameters, the studied surfaces are generated using computer simulation. The elasto-plastic contact of rough surfaces is analyzed by means of semi-analytical method (SAM) and minimization of complementary energy. Results indicate that with increasing the interval of texture, average surface gap remains invariant while contact area ratio and the volume of plastically deformed material decreases.
1. Introduction
Machining processes produce surface topography with di?erent characteristics, which may in?uence the contact performance of rough surfaces [1]. Wang et al. [2] developed a numerical simulation method for generating rough surfaces with desired autocorrelation function (ACF) and statistical parameters, Gaussian, non-Gaussian, isotropic, and nonisotropic rough surfaces can be generated by this method. However, the parameters are not from real machined surface. There are various machining parameters s
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