A 2005 TRC report presents imbalance response measurements of a hollow test rotor supported on bump-type gas foil bearings. The top speed of the tests is 25 krpm, the limit of the drive router motor. The 2005 measurements show the gas foil bearings are prone to subsynchronous whirl with amplitudes of motion exacerbated by the imbalance condition of the rotor, i.e. a forced nonlinearity. Present...

The newest advancement in the realm of bearing technology, Air Foil Bearings (AFB) is a marvel that allows for operation at both incredibly low and high temperatures without fail. Their minimalistic design eliminates requirement lubrication sealing systems, making them not only more efficient but also eco-friendly. When it comes to speed, these bearings give no quarter - they can handle even mo...

Lubrication with ambient air is not quite generally applied. The best known application is the “foil bearing” in tape recording systems for audio, video and computer applications; where the gap height that is needed for effective lubrication may quite easily be attained. This air gap reduces tape friction and wear of tape and recording head substantially. On the other hand, though, the air gap ...

The performance of gas foil thrust bearings is critical to the successful design and operation high axial load rotatory machines that employ bearings. However, our understanding remains incomplete. To enhance predict bearings, we have established a detailed three-dimensional thermo-elastic-hydrodynamic model bearing based on fluid-thermal-structure interaction approach in this study. validate a...