文章基本信息

标题：Friction and adhesive wear behavior caused by periodic impact in mixed-lubricated point contacts
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作者：Xin Pei ; Wei Pu ; Jialong Yang 等
期刊名称：Advances in Mechanical Engineering
印刷版ISSN：1687-8140
电子版ISSN：1687-8140
出版年度：2020
卷号：12
期号：2
页码：1-14
DOI：10.1177/1687814020901666
出版社：Sage Publications Ltd.
摘要：Periodic impact is a common phenomenon experienced by functional components. The mechanisms governing the adhesive wear growth caused by the periodic impact are not well understood, which limits the development of antiwear and lubricating behavior. In this work, the periodic impact action caused by rubbing surface velocity and contact load is studied in the sliding wear process under mixed lubrication condition. At each wear simulation circle, the material removal at each asperity contact location is evaluated and the surface topography is renewed correspondingly. The evolutions of friction and wear track are revealed during wear process. We find that the friction coefficient changes periodically caused by the periodic speed, and the wear rate increases almost linearly with either speed period or speed amplitude. The load impact results in an abrupt variation in friction coefficient, while it appears to be limited in adhesive wear state compared to speed, highlighting the critical role of velocity impact in wear formation.
关键词：Periodic impact; adhesive wear; friction coefficient; mixed lubrication
其他关键词：Periodic impact ; adhesive wear ; friction coefficient ; mixed lubrication