A Deterministic Stress-Activated Model for Tribo-Film Growth and Wear Simulation

Aydar Akchurin* (Corresponding Author), Rob Bosman

*Corresponding author for this work

    Research output: Contribution to journalArticleAcademicpeer-review

    16 Citations (Scopus)
    55 Downloads (Pure)

    Abstract

    A new model was developed for the simulation of growth and wear of tribo-chemical films by combining a boundary element method-based contact model and a stress-activated Arrhenius tribo-film growth equation. Using this methodology, it is possible to predict the evolution and steady-state thickness of the tribo-film (self-limitation) at various operating conditions. The model was validated using two cases for which experimental data were available in the literature. The first case is a single microscopic contact consisting of a DLC-coated AFM tip and an iron-coated substrate. The second case is a macroscale contact between a bearing steel ball and disk. Subsequently, mild wear (wear after running-in) was modeled by assuming diffusion of the substrate atoms into the tribo-film.

    Original languageEnglish
    Article number59
    JournalTribology letters
    Volume65
    Early online date31 Mar 2017
    DOIs
    Publication statusPublished - Jun 2017

    Keywords

    • Self-limitation
    • Stress-activated growth
    • Tribo-film growth
    • Wear simulation

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