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http://dx.doi.org/10.9725/kstle.2004.20.5.252

A Study on Fatigue Life under Elliptical Contact using High Cycle Fatigue Models  

조용주 (부산대학교 기계공학부)
김태완 (부산대학교 기계기술연구소)
구영필 (부경대학교 기계공학부)
Publication Information
Tribology and Lubricants / v.20, no.5, 2004 , pp. 252-258 More about this Journal
Abstract
In this study, using high cycle fatigue (HCF) criteria, the simulation of rolling contact fatigue is conducted under elliptical contact. The HCF criteria fall into three categories: the critical plane approach, the stress invariant approach and the approach based on the mesoscopic scale. The accurate calculation of contact stresses and subsurface stresses is essential to the prediction of crack initiation life. Contact stresses are obtained by contact analysis of a semi-infinite solid based on the use of influence functions and the subsurface stress field is obtained using rectangular patch solutions. The simulation results show that the critical load is decreasing rapidly and the site of crack initiation also moves rapidly to the surface from the subsurface when the friction coefficient exceeds a specific value for all of three fatigue criteria.
Keywords
contact fatigue; high cycle fatigue criteria; contact analysis; crack initiation life;
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