Characterization of interfacial shear strength and its effect on ploughing behaviour in single-asperity sliding

Tanmaya Mishra*, Matthijn de Rooij, Meghshyam Shisode, Javad Hazrati, Dirk J. Schipper

*Corresponding author for this work

    Research output: Contribution to journalArticleAcademicpeer-review

    3 Citations (Scopus)
    12 Downloads (Pure)

    Abstract

    The shear strength at the interface contributes to the overall friction force experienced by the contacting bodies sliding against each other. In this article, an experimental technique to characterize the shear strength at the interface of metallic bodies in sliding contact has been developed. The boundary layers formed at interface in a lubricating contact have been varied by using two different types of lubricants in combination with both zinc coated and uncoated steel sheets. The empirical relations between the experimental parameters such as contact pressure and sliding velocity and the interfacial shear strength have been expressed by fitting the experimental results. These expressions have been incorporated in the Material Point Method (MPM) based ploughing model. The coefficient of friction and ploughing depth obtained from the numerical simulations have been validated relative to the experimental results with a good agreement for both lubricated and unlubricated substrates, different loads and spherical indenter sizes. Furthermore, the interfacial shear strength has been varied in the MPM-based ploughing model and ploughing experiments to study the contribution of interfacial shear strength to overall friction, deformation and wear.

    Original languageEnglish
    Article number203042
    JournalWear
    Volume436-437
    Early online date7 Sep 2019
    DOIs
    Publication statusPublished - 15 Oct 2019

    Keywords

    • UT-Hybrid-D
    • Friction model
    • Interfacial shear
    • Material point method
    • Ploughing
    • Boundary layer

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