Characteristics of the lubricating action of oils under EHD conditions in the local friction contact zone
DOI:
https://doi.org/10.31891/2079-1372-2026-121-3-35-47Keywords:
lubricating action of oils, elastohydrodynamic (EHD) lubrication, interferometric test stand, lubricant film thickness, local friction contact zone, non-conforming assemblies, contact geometries, actual contact shape, rheological properties, elliptical contact, point contact, ellipticity parameterAbstract
Based on the newly developed interferometric test stand for evaluating lubricant film thickness — which enables the high-precision recording and analysis of transient processes under EHD lubrication conditions in the local friction contact zone of the non-conforming assemblies with varying actual contact geometries — across a wide range of operating (kinematic and load) parameters, an assessment was made of the influence of velocity, contact load, friction pair materials, the rheological properties of the lubricants and the geometry of the contact shape on the process of forming the minimum and central thicknesses of the lubricant film and the lubricating action of oils within the framework of determining the lubricant film parameter
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