Energy-Based Modelling of Adhesive Wear in the Mixed Lubrication Regime
Adhesive wear in dry contacts is often described using the Archard or Fleischer model. Both provide equations for the determination of a wear volume, taking the load, the sliding path and a set of material parameters into account. While the Fleischer model is based on energetic approaches, the Archa...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-02-01
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| Series: | Lubricants |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-4442/8/2/16 |
| _version_ | 1828120205226672128 |
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| author | J. Torben Terwey Mohamed Ali Fourati Florian Pape Gerhard Poll |
| author_facet | J. Torben Terwey Mohamed Ali Fourati Florian Pape Gerhard Poll |
| author_sort | J. Torben Terwey |
| collection | DOAJ |
| description | Adhesive wear in dry contacts is often described using the Archard or Fleischer model. Both provide equations for the determination of a wear volume, taking the load, the sliding path and a set of material parameters into account. While the Fleischer model is based on energetic approaches, the Archard formulation uses an empirical factor—the wear coefficient—describing the intensity of wear. Today, a numerical determination of the wear coefficient is already possible and both approaches can be deduced to a local accumulation of friction energy. The aim of this work is to enhance existing energy-based wear models into the mixed lubrication regime. Therefore, the pressure distribution within the contact area will be determined numerically taking real surface topographies into account. The emerging contact area will be divided into one part of solid and a second part of elastohydrodynamically lubricated (EHL) contacts. Based on the resulting pressure and shear stress distribution, the formation of micro cracks within the loaded volume will be described. Determining a critical number of load cycles for each asperity, a locally resolved wear coefficient will be derived and the local wear depth calculated. |
| first_indexed | 2024-04-11T14:01:24Z |
| format | Article |
| id | doaj.art-4d86b3c27b5745db9b4229c7297f9d2d |
| institution | Directory Open Access Journal |
| issn | 2075-4442 |
| language | English |
| last_indexed | 2024-04-11T14:01:24Z |
| publishDate | 2020-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Lubricants |
| spelling | doaj.art-4d86b3c27b5745db9b4229c7297f9d2d2022-12-22T04:20:07ZengMDPI AGLubricants2075-44422020-02-01821610.3390/lubricants8020016lubricants8020016Energy-Based Modelling of Adhesive Wear in the Mixed Lubrication RegimeJ. Torben Terwey0Mohamed Ali Fourati1Florian Pape2Gerhard Poll3Institute of Machine Design and Tribology, Leibniz University Hannover, Welfengarten 1A, 30167 Hannover, GermanyInstitute of Machine Design and Tribology, Leibniz University Hannover, Welfengarten 1A, 30167 Hannover, GermanyInstitute of Machine Design and Tribology, Leibniz University Hannover, Welfengarten 1A, 30167 Hannover, GermanyInstitute of Machine Design and Tribology, Leibniz University Hannover, Welfengarten 1A, 30167 Hannover, GermanyAdhesive wear in dry contacts is often described using the Archard or Fleischer model. Both provide equations for the determination of a wear volume, taking the load, the sliding path and a set of material parameters into account. While the Fleischer model is based on energetic approaches, the Archard formulation uses an empirical factor—the wear coefficient—describing the intensity of wear. Today, a numerical determination of the wear coefficient is already possible and both approaches can be deduced to a local accumulation of friction energy. The aim of this work is to enhance existing energy-based wear models into the mixed lubrication regime. Therefore, the pressure distribution within the contact area will be determined numerically taking real surface topographies into account. The emerging contact area will be divided into one part of solid and a second part of elastohydrodynamically lubricated (EHL) contacts. Based on the resulting pressure and shear stress distribution, the formation of micro cracks within the loaded volume will be described. Determining a critical number of load cycles for each asperity, a locally resolved wear coefficient will be derived and the local wear depth calculated.https://www.mdpi.com/2075-4442/8/2/16adhesive wearmixed lubricationelastic half-space |
| spellingShingle | J. Torben Terwey Mohamed Ali Fourati Florian Pape Gerhard Poll Energy-Based Modelling of Adhesive Wear in the Mixed Lubrication Regime Lubricants adhesive wear mixed lubrication elastic half-space |
| title | Energy-Based Modelling of Adhesive Wear in the Mixed Lubrication Regime |
| title_full | Energy-Based Modelling of Adhesive Wear in the Mixed Lubrication Regime |
| title_fullStr | Energy-Based Modelling of Adhesive Wear in the Mixed Lubrication Regime |
| title_full_unstemmed | Energy-Based Modelling of Adhesive Wear in the Mixed Lubrication Regime |
| title_short | Energy-Based Modelling of Adhesive Wear in the Mixed Lubrication Regime |
| title_sort | energy based modelling of adhesive wear in the mixed lubrication regime |
| topic | adhesive wear mixed lubrication elastic half-space |
| url | https://www.mdpi.com/2075-4442/8/2/16 |
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