Experimental Analysis of the Start-Up Torque of a Mildly Loaded Foil Thrust Bearing1
| Autor: | Mihai Arghir, Franck Balducchi, Romain Gauthier, Emelyne Renard |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Materials science
business.industry Mechanical Engineering Stiffness Surfaces and Interfaces Structural engineering Rotation Surfaces Coatings and Films law.invention Stress (mechanics) Thrust bearing Mechanics of Materials law medicine Torque sensor Torque medicine.symptom business Friction torque FOIL method |
| Zdroj: | Journal of Tribology. 135 |
| ISSN: | 1528-8897 0742-4787 |
| DOI: | 10.1115/1.4024211 |
| Popis: | The paper deals with the experimental analysis of the torque and of the lift-off velocity of a foil thrust bearing. The geometric characteristics of the foil thrust bearing follow the design recently proposed by Dykas et al. (2009, “Design, Fabrication, and Performance of Foil Gas Thrust Bearings for Microturbomachinery Applications,” ASME J. Eng. Gas Turbines Power, 131(1), p. 012301-1). A dedicated test rig was developed and enables the measurement of the speed, the torque, and temperatures under the foils. The measurements underlined the importance of managing heat transfer in a foil thrust bearing. Results are presented for mild static loads ranging from 5 to 60 N and rotation speeds comprised between 20 and 35 krpm. The value of the start-up torque was validated by comparisons with results obtained with a rapid camera. |
| Databáze: | OpenAIRE |
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