Air foil bearings have compliant elastic foundation to provide compliance to bearing surface and damping. The most widely used elastic structure is the corrugated bump foil. All the currently available formulas for the bump stiffness [1–3] do not consider bending moments at the bump supports and within the straight contact patch which connects the bumps. However, for continuous bump foils, bending moments at the support points where contact is made with the bearing sleeve cannot be neglected. This paper introduces a set of new formulations for stiffness of bump foils considering the bending moments at the support points. All the formulas were derived using computer algebra software. The results are compared with the result from other formula [3].
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ASME/STLE 2007 International Joint Tribology Conference
October 22–24, 2007
San Diego, California, USA
Conference Sponsors:
- Tribology Division
ISBN:
0-7918-4810-8
PROCEEDINGS PAPER
Revisit to Stiffness of Bump Foils in Air Foil Bearings
Daejong Kim,
Daejong Kim
Texas A&M University, College Station, TX
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Chinedu Ezeka,
Chinedu Ezeka
Texas A&M University, College Station, TX
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Manish Kumar
Manish Kumar
Texas A&M University, College Station, TX
Search for other works by this author on:
Daejong Kim
Texas A&M University, College Station, TX
Chinedu Ezeka
Texas A&M University, College Station, TX
Manish Kumar
Texas A&M University, College Station, TX
Paper No:
IJTC2007-44319, pp. 311-313; 3 pages
Published Online:
March 23, 2009
Citation
Kim, D, Ezeka, C, & Kumar, M. "Revisit to Stiffness of Bump Foils in Air Foil Bearings." Proceedings of the ASME/STLE 2007 International Joint Tribology Conference. ASME/STLE 2007 International Joint Tribology Conference, Parts A and B. San Diego, California, USA. October 22–24, 2007. pp. 311-313. ASME. https://doi.org/10.1115/IJTC2007-44319
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