THERMO-KINETIC MODEL FOR ASSESSMENT OF DURABILITY OF CONTACT SURFACES UNDER LUBRICATING IN NON-STATIONARY MODE OF OPERATION
Journal Title: Проблеми тертя та зношування - Year 2017, Vol 74, Issue
Abstract
A phenomenological model for assessing the durability of the wear layer is suggested. The model considers two areas of damage accumulation, namely the areas of multiple-cycle contact fatigue and debris layer. In the model, the methods of evaluating the parameters to describe durability cycle fatigue are suggested. Based on thermo-fluctuation theory of strength of solids, the expressions have been obtained that relate the stress-strain state and the characteristics of material fatigue strength with the characteristics of a physical model of the material fracture. The influence of the degree of hardening of the near surface layers, such as secondary structures and boundary lubricant layer formed as a result of structural adaptability, on the activation energy leading to failure mechanism under friction has been identified.
Authors and Affiliations
О. О. МIKOSYANCHIK
Keywords
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