title   
  

A simple fem model for foil bearings under differential pressure

Aksoy, Serdar and Akşit, Mahmut Faruk and Doğu, Yahya (2010) A simple fem model for foil bearings under differential pressure. In: STLE/ASME International Joint Tribology Conference, 2010 (IJTC2010), San Francisco, California, USA

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Abstract

A bump-type foil bearing consists of a compliant corrugated sheet metal supporting structure that is covered by a thin top foil surface. Bumps serve as stiffener and damping elements to increase the stability of the system while top foil creates necessary wedge surface for aerodynamic film formation. Foil bearings are hard to analyze as flexible foil surface deforms and changes shape while aerodynamic film pressure forms. Iterative solutions required typical of EHL analysis. This work utilizes Reynolds Equation to solve aerodynamic film pressure by coupling structural deformation and the fluid film pressure formation. Bearing performance under various operating conditions and the effect of differential pressure boundary condition on sealing capacity is discussed.

Item Type:Papers in Conference Proceedings
Uncontrolled Keywords:Foil bearing, Reynolds equation, aerodynamic film pressure, foil seal
Subjects:T Technology > TJ Mechanical engineering and machinery
ID Code:16081
Deposited By:Mahmut Faruk Akşit
Deposited On:07 Dec 2010 11:01
Last Modified:10 Jun 2011 15:59

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