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Tribology Transactions Volume 46, 2003 - Issue 4
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Original Articles

Effect of Surface Topography on Contact Fatigue in Mixed Lubrication

Dmitry Epstein Northwestern University, Center for Surface Engineering and Tribology, Evanston, Illinois, 60208
,
Leon M. Keer Northwestern University, Center for Surface Engineering and Tribology, Evanston, Illinois, 60208
,
Q. Jane Wang Northwestern University, Center for Surface Engineering and Tribology, Evanston, Illinois, 60208
,
H. S. Cheng Northwestern University, Center for Surface Engineering and Tribology, Evanston, Illinois, 60208
&
Dong Zhu Eaton Corporation, Innovation Center, Southfield, Michigan, 48037
Pages 506-513 | Published online: 25 Mar 2008
 
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Abstract

The paper proposes a rolling/sliding contact fatigue model for machine components in mixed lubrication undergoing cyclic loading. The model consists of two distinct components. The first is a full-scale mixed lubrication analysis of interacting rough surfaces, during which surface pressure distribution is calculated. The second is the computation of subsurface stresses and determination of fatigue life using the Zaretsky fatigue model. Numerical examples are presented for a variety of surfaces with different finishes. The model predictions confirm that surface roughness and texture have a significant impact on fatigue life.

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Related Research Data

A Fatigue Model for Spur Gear Contacts Operating Under Mixed Elastohydrodynamic Lubrication Conditions
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