Study on the Evolution of Real Contact Area between Elastic-plastic Rough Surfaces

doi:10.3901/JME.2021.07.109

Abstract

Abstract: The real contact area of elastic-plastic rough surfaces significantly affects the friction coefficient, the thermal/electrical conductivity, and the contact stress of the assembly surfaces of precision electromechanical devices. However, as far as the authors known, the elastic-plastic contact behavior is rarely studied systematically, and the evolution of the real contact area has not been investigated. To solve this problem, the factors affecting the real contact area of elastic-plastic rough surfaces are revealed by theoretical research. Based on this, the contact behavior of various elastic-plastic rough surfaces with different material and surface topography is numerically studied, and real contact area versus average contact pressure curves are obtained. With these results, the quantitative relationship between the evolution of the real contact area and the factors is presented, which will provide fundamental theory for scientists and engineers working in this field.

Key words: contact mechanics, elastic-plastic, rough surface, real contact area, numerical contact analysis

CLC Number:

TB42

LIU Jianhua, ZHANG Feikai, DING Xiaoyu. Study on the Evolution of Real Contact Area between Elastic-plastic Rough Surfaces[J]. Journal of Mechanical Engineering, 2021, 57(7): 109-116.

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