Abstract
In this investigation, a complete analytical model of the bump-type foil bearing considering the effects of four factors, the elasticity of bump foil, the friction forces at contact surfaces and the interacting forces between bumps, the local deflection of top foil and the assembly preload, is presented. In this model, the bump foil is simplified to a two rigid links and one horizontally spaced spring structure. Because the spring is parallel with the frictional forces and the interaction forces, it is easy to take into account the effects of the forces inside foil structure. The local deflection of top foil is described using a Finite Element model and added to the film thickness for the pressure prediction with Reynolds' equation. An assembly deflection of both top foil and bump foil is used to simulate the preload. The static load and film thickness of a bump-type foil bearing are predicted using this model and the results are very closed to the experimental data.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
