Paper Title:

Contact Fatigue Life Prediction under EHL Contact

Periodical Key Engineering Materials (Volumes 297 - 300)
Main Theme Advances in Fracture and Strength
Edited by Young-Jin Kim, Dong-Ho Bae and Yun-Jae Kim
Pages 22-27
DOI 10.4028/www.scientific.net/KEM.297-300.22
Citation Tae Wan Kim et al., 2005, Key Engineering Materials, 297-300, 22
Online since November, 2005
Authors Tae Wan Kim, Sang Don Lee, Yong Joo Cho
Keywords Contact Fatigue, Crack Initiation Life, EHL Analysis, High Cycle Fatigue Criteria
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Abstract

In this study, the simulation of contact fatigue based on stress analysis is conducted under Elastohydrodynamic Lubrication (EHL) 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-infinite solid based on the use of influence functions and the subsurface stress is obtained using rectangular patch solutions. The numerical algorithm using newton-rapson method was constructed to calculate the EHL pressure. Based on these stress values, three multiaxial high-cycle fatigue criteria are used. As a result, the effects of EHL on contact fatigue life are calculated.