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

Aydar Akchurin; Rob Bosman

doi:10.1007/s11249-017-0842-8

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

Aydar Akchurin^* (Corresponding Author), Rob Bosman

^*Corresponding author for this work

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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 language	English
Article number	59
Journal	Tribology letters
Volume	65
Early online date	31 Mar 2017
DOIs	https://doi.org/10.1007/s11249-017-0842-8
Publication status	Published - Jun 2017

Keywords

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

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10.1007/s11249-017-0842-8Licence: CC BY

ArticleFinal published version, 908 KBLicence: CC BY

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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.",

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AU - Akchurin, Aydar

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PY - 2017/6

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N2 - 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.

AB - 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.

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KW - Wear simulation

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

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