文献类型：期刊文献

英文题名：Heterogeneous structures with inhomogeneous inclusions under elastohydrodynamic lubrication contact with consideration of surface roughness

作者：Dong, Qingbing[1];Yang, Jing[1];Wang, Xu[2];Keer, Leon M.[3];Zhou, Kun[1]

机构：[1]Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore;[2]E China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[3]Northwestern Univ, Dept Mech Engn, Chicago, IL 60611 USA

年份：2016

卷号：230

期号：5

起止页码：571

外文期刊名：PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY

收录：;EI(收录号：20161902367593);WOS:【SCI-EXPANDED(收录号:WOS:000374674100006)】；

基金：The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: The authors acknowledge financial support by Singapore Maritime Institute (Grant no: SMI-2014-MA11) and the National Natural Science Foundation of China (Grant no: 11472200).

语种：英文

外文关键词：Elastohydrodynamic lubrication; heterogeneous material; equivalent inclusion method; coating; surface roughness

摘要：In order to predict the microscopic response of surface coatings and subsurface inhomogeneous inclusions, a semi-analytical solution is developed for heterogeneous materials subjected to elastohydrodynamic lubrication contact. In this solution, the inhomogeneous inclusions are homogenized according to Eshelby's equivalent inclusion method with unknown eigenstrains to be determined. The topmost coating is assumed as an inhomogeneous inclusion of finite size and thus simulated with the same methodology. The disturbed surface deformation due to the presence of coatings and inhomogeneous inclusions are iteratively introduced into the lubricant film thickness until a convergence is achieved. The effects of surface roughness on the pressure and film thickness profiles and subsurface elastic fields are considered to approach the engineering practice. This solution takes into account the interactions between the loading body, the fluid lubricant and the coating/substrate system with embedded inclusions.