Friction in lubricated soft-on-hard, hard-on-soft and soft-on-soft sliding contacts
| Autor: | Stanisław Stupkiewicz, Przemysław Sadowski |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Friction coefficient
Materials science Astrophysics::High Energy Astrophysical Phenomena Mechanical Engineering 02 engineering and technology Surfaces and Interfaces 021001 nanoscience & nanotechnology Viscoelasticity Surfaces Coatings and Films 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials Lubrication Surface roughness Composite material 0210 nano-technology Focus (optics) Tribometer |
| Zdroj: | Tribology International. 129:246-256 |
| ISSN: | 0301-679X |
| Popis: | Friction in lubricated soft contacts is examined using a ball-on-disc tribometer with the focus on the effect of configuration. In the soft-on-hard and hard-on-soft configurations, one of the contact-pair members is soft while the other one is hard. In the soft-on-soft configuration, both members are soft. For a soft disc, time-dependent viscoelastic deformations contribute to friction. Upon correction for the hysteretic losses, estimated using a theoretical model, the friction coefficient in the full-film regime does not depend on configuration. This holds also for high loads, when the deformations are finite. The combined effect of configuration and surface roughness on the transition from the full-film to the mixed lubrication regime is also examined. |
| Databáze: | OpenAIRE |
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