An Analytical Solution for the Initiation and Early Progression of Fretting Wear in Spherical Contacts

Yang, Huaidong; Green, Itzhak

doi:10.1115/1.4051585

An Analytical Solution for the Initiation and Early Progression of Fretting Wear in Spherical Contacts

Journal Article · 22 July 2021 · Journal of Tribology

DOI:https://doi.org/10.1115/1.4051585· OSTI ID:1980659

Yang, Huaidong ^[1]; Green, Itzhak ^[1]

G. W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332

Abstract

This article derives analytical solutions to calculate the wear volume at the initiation of fretting motion and its early progression over the first few oscillation cycles. The Archard-based model considers a deformable hemisphere that is contact with a deformable flat block. The material pairs investigated are special alloys, the Inconel 617/Incoloy 800H, and Inconel 617/Inconel 617. The analytical study begins with a unidirectional frictional sliding contact, where the local interfacial sliding distance and the nominal sliding distance at the initiation of gross slip are derived. The obtained analytical expressions for unidirectional sliding are then used to derive the corresponding wear volume for the initiation and early progression of gross slip and the wear volume for a general fretting cycle under elastic conditions. These analytical derivations are all verified by the finite element analysis (FEA). The FEA method and the analytical solutions render virtually identical results for both similar and dissimilar material pairs. The effects of plasticity on the wear volume under elastic–plastic conditions are also investigated. It is found that the fretting wear volumes obtained from the FEA simulations, which include plasticity, are close to those obtained from the analytical expressions for purely elastic regimes. All the results are presented in normalized forms, which can be easily generalized and applied to three-dimensional fretting wear of other material pairs.

Research Organization:: Georgia Institute of Technology, Atlanta, GA (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

DOE Contract Number:: SC0018369

OSTI ID:: 1980659

Journal Information:: Journal of Tribology, Vol. 144, Issue 4; ISSN 0742-4787

Publisher:: ASME

Country of Publication:: United States

Language:: English

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