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http://dx.doi.org/10.9725/kstle.2006.22.6.320

Contact Fatigue Life Prediction under Elliptical Elastohydrodynamic Lubrication  

Kim, Tae-Wan (Nanotribology Laboratory for Information Storage and MEMS/NEMS(NLIM), The Ohio State University)
Lee, Sang-Don (Graduate School, Pusan National University)
Koo, Young-Pil (Busan Techno-Park Technical Support Team)
Cho, Yang-Joo (School of Mechantcal Engineering, Pusan National University)
Publication Information
Tribology and Lubricants / v.22, no.6, 2006 , pp. 320-328 More about this Journal
Abstract
In this study, the simulation of rolling contact fatigue based on stress analysis is conducted under Elastohydrodynamic Lubrication state. To predict a crack initiation life accurately, it is necessary to calculate contact stress and subsurface stresses accurately. Contact stresses are obtained by contact analysis of a semi-infinile solid based on the use of influence functions and the subsurface stress field is obtained using rectangular patch solutions. And a numerical algorithm using Newton-Rapson method was constructed to calculate the Elastohydrodynamic lubrication pressure. Based on these stress values, several multiaxial high-cycle fatigue criteria are used and the critical loads corresponding to fatigue limits are calculated.
Keywords
Contact fatigue; high cycle fatigue criteria; EHL analysis; crack initiation life;
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