A material point method based ploughing model to study the effect of asperity geometry on the ploughing behaviour of an elliptical asperity

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    Abstract

    A material point method (MPM)-based numerical model has been used to study the effect of asperity size and orientation relative to sliding direction on the ploughing behaviour of a rigid, ellipsoidal asperity. Based on the simulated ploughing behaviour, an analytical model has been extended to calculate the ploughing depths over the wear track and compute the forces acting over the contacting surface of an ellipsoidal asperity sliding through a rigid-plastic substrate. The analytical model results have been compared with the MPM model results. The MPM model results are also validated to be in good agreement with the friction forces and ploughing depths measured from the ploughing experiments on lubricated steel sheets with ellipsoidal indenters up to certain sizes and orientations.

    Original languageEnglish
    Article number106017
    JournalTribology international
    Volume142
    Early online date16 Oct 2019
    DOIs
    Publication statusPublished - 1 Feb 2020

    Keywords

    • UT-Hybrid-D
    • Friction modelling
    • Multi-asperity
    • Ploughing
    • Ellipsoidal asperity

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