Investigation on the plasticity accumulation of Ti-6Al-4V fretting wear by decoupling the effects of wear and surface profile in finite element modelling

Tobi, A.L. Mohd and Sun, Wei and Shipway, P.H. (2016) Investigation on the plasticity accumulation of Ti-6Al-4V fretting wear by decoupling the effects of wear and surface profile in finite element modelling. Tribology International . ISSN 1879-2464

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Abstract

A finite-element-based wear modelling methodology and a computational device for decoupling wear effects is presented in this study. The decoupling of wear effects facilitates the capture of plasticity accumulation on a particular wear-scarring profile after a specific number of cycles. It was determined that significant plasticity accumulation due to plastic shakedown was predicted in a partial-slip case, while a saturation of plastic deformation was predicted in a gross-sliding case. It was also predicted that a significant amount of plasticity does not meaningfully contribute to the stress and strain range observed in the contact region. It was assumed that plasticity accumulation contributes towards wear of the material and feeds the stress changes, which indirectly affects fatigue life.

Item Type: Article
Keywords: Finite element; Fretting wear; Ti-6Al-4V; Plasticity
Schools/Departments: University of Nottingham, UK > Faculty of Engineering > Department of Mechanical, Materials and Manufacturing Engineering
Identification Number: 10.1016/j.triboint.2016.12.009
Depositing User: Sun, Wei
Date Deposited: 02 Mar 2017 11:10
Last Modified: 08 Dec 2017 11:00
URI: http://eprints.nottingham.ac.uk/id/eprint/40969

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