Stribeck Curve of Magnetorheological Fluid within Pin-on-Disc Configuration: An Experimental Investigation
| Autor: | Z. Strecker, Michal Kubík, Ondřej Macháček, F. Jeniš, J. Roupec |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
magnetorheological fluid
Materials science friction Stribeck curve 02 engineering and technology lcsh:Technology Article Damper 0203 mechanical engineering General Materials Science Composite material Coefficient of friction lcsh:Microscopy lcsh:QC120-168.85 MR damper lcsh:QH201-278.5 lcsh:T pin on disc 021001 nanoscience & nanotechnology 020303 mechanical engineering & transports lcsh:TA1-2040 Magnetorheological fluid Lubrication Carrier fluid Particle tribological performance lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering 0210 nano-technology lcsh:Engineering (General). Civil engineering (General) lcsh:TK1-9971 |
| Zdroj: | Materials, Vol 13, Iss 4670, p 4670 (2020) Materials . 2020, vol. 13, issue 20, p. 1-11. Materials Volume 13 Issue 20 |
| ISSN: | 1996-1944 |
| Popis: | The paper focuses on the coefficient of friction (COF) of a magnetorheological fluid (MRF) in the wide range of working conditions across all the lubrication regimes&mdash boundary, mixed, elastohydrodynamic (EHD), and hydrodynamic (HD) lubrication, specifically focused on the common working area of MR damper. The coefficient of friction was measured for MR fluids from Lord company with concentrations of 22, 32, and 40 vol. % of iron particles at temperatures 40 and 80 ° C. The results were compared with a reference fluid, a synthetic liquid hydrocarbon PAO4 used as a carrier fluid of MRF. The results show that at boundary regime and temperature 40 ° C all the fluids exhibit similar COF of 0.11&ndash 0.13. Differences can be found in the EHD regime, where the MR fluid COF is significantly higher (0.08) in comparison with PAO4 (0.04). The COF of MR fluid in the HD regime rose very steeply in comparison with PAO4. The effect of particle concentration is significant in the HD regime. |
| Databáze: | OpenAIRE |
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