2019
DOI: 10.1139/tcsme-2017-0052
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A statistical model of elastic-plastic contact between rough surfaces

Abstract: In a mechanical interface, the contact surface topography has an important influence on the contact stiffness. In the contact processes of asperities, elastic-plastic change can lead to discontinuity and lack of smoothness at a critical contact point. The result is a large difference between the elastic-plastic deformation and the actual asperity deformation. Based on Hertz contact theory, the heights of asperities on a rough surface obey a Gaussian distribution. To take into consideration the continuity of el… Show more

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Cited by 8 publications
(6 citation statements)
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“…Generally, the elastoplastic deformation stages of existing models differ markedly from actual deformation. To enhance the contact model, by synthesizing the research of Zhao et al (2019) factoring in friction, the elastoplastic stage is segmented into three distinct phases: First elastoplastic deformation stage: This stage occurs when ωecμω6ωecμ. Second elastoplastic deformation stage: This stage is defined for 6ωecμω76.8ωecμ. Third elastoplastic deformation stage: This stage occurs when 76.8ωecμω110ωecμ. …”
Section: The Force Deformation Mechanism Of a Single Asperitymentioning
confidence: 99%
See 1 more Smart Citation
“…Generally, the elastoplastic deformation stages of existing models differ markedly from actual deformation. To enhance the contact model, by synthesizing the research of Zhao et al (2019) factoring in friction, the elastoplastic stage is segmented into three distinct phases: First elastoplastic deformation stage: This stage occurs when ωecμω6ωecμ. Second elastoplastic deformation stage: This stage is defined for 6ωecμω76.8ωecμ. Third elastoplastic deformation stage: This stage occurs when 76.8ωecμω110ωecμ. …”
Section: The Force Deformation Mechanism Of a Single Asperitymentioning
confidence: 99%
“…Generally, the elastoplastic deformation stages of existing models differ markedly from actual deformation. To enhance the contact model, by synthesizing the research of Zhao et al (2019) epc1 , the contact load and area of a single asperity are detailed as follows (Wen and Tang, 2018):…”
Section: Ellipsoid Asperity Geometric Modelmentioning
confidence: 99%
“…Statistical contact models use statistical parameters to characterize the rough surfaces. e GW contact model proposed by Greenwood [26] in 1966 is a typical representative of the statistical contact models, and subsequent scholars have improved the GW model from different aspects [27,28]. e advantage of statistical contact models is that their expressions are simple and clear, which greatly simplifies the derivation of the contact equation between rough surfaces and is conducive to rapid contact analysis between rough surfaces.…”
Section: Introductionmentioning
confidence: 99%
“…Many tribology studies have used surface topography to analyze and quantify the behavior of a system (wear, friction) [1,2]. In numerous cases, the study of a tribological process involves the continuous (or progressive) monitoring of the morphological change of the surface over time [3] or during the continuous evolution of a mechanical request: for example, monitoring surface damage on a tribometer [4], surface wear [5][6][7][8], changes in the tribo-chemical process [9,10], plastic deformation [11] of roughness asperities through an increase in macroscopic contact pressure [4,12], etc. In other words, the monitoring of surface morphology constitutes the basic analysis of the tribological process.…”
Section: Introductionmentioning
confidence: 99%