Friction Force Measurement at Windscreen Wiper/Glass Contact
| Autor: | Gábor Bódai, Tibor Goda |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Materials science
Normal force Orders of magnitude (temperature) Structural level Mechanical Engineering media_common.quotation_subject Surfaces and Interfaces Elastomer Surfaces Coatings and Films law.invention Windscreen wiper Natural rubber Mechanics of Materials law visual_art visual_art.visual_art_medium Cylinder Eccentricity (behavior) Composite material media_common |
| Zdroj: | Tribology Letters. 45:515-523 |
| ISSN: | 1573-2711 1023-8883 |
| DOI: | 10.1007/s11249-011-9907-2 |
| Popis: | In the present study, a novel windscreen wiper-on-cylinder machine has been used to investigate the influence of sliding speed and normal force on the coefficient of friction. Using this machine it is possible to measure the friction force not only on specimen level, as in former studies to be available in the literature, but also on structural level by considering the whole windscreen wiper. As measurement results are strongly influenced by both the real, non-circular cross-section, and the eccentricity of the rotating glass cylinder an analytical model has been developed to explain the measurement results. The good agreement to be found between theory and experiment confirms the validity of the model. Majority of the results belongs to partial contact where the wiper blade is not in contact with the glass countersurface along its total length. After the discussion of experimental results, as a last step, authors made an attempt to compare quantitatively the predictive capability of two different contact models widely used in mixed friction model of sliding rubber components. The results show that the difference in film thickness due to solid–solid contact can be larger than three orders of magnitude in case of a typical windscreen wiper. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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