Micro-mechanical modelling of fretting fatigue crack initiation and wear in Ti–6Al–4V

O.J. McCarthy, J.P. McGarry, S.B. Leen

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    31 Citations (Scopus)

    Abstract

    A micro-mechanical modelling methodology is presented for predicting fretting fatigue crack nucleation in Ti–6Al–4V. The methodology is based on a combination of (i) a unit cell crystal plasticity model of Ti– 6Al–4V, (ii) a frictional contact model of an experimental fretting wear configuration, and (iii) implementation of a microstructure-sensitive fatigue indication parameter for prediction of crack nucleation. A novel micro-mechanical method for wear prediction is presented. A key finding is the important role of cyclic micro-plasticity in ostensibly elastic loading regimes in fretting wear, resulting in significant effects on distributions of salient fretting contact variables such as contact pressure. � 2013 Elsevier Ltd. All rights reserved.
    Original languageEnglish
    Pages (from-to)180-193
    JournalInternational Journal of Fatigue
    Volume62
    DOIs
    Publication statusPublished - 2014

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