Analytical & Rotordynamic Modeling
Finite Element Model of Oil-Free Turbocharger Rotor
Advances in . . .
- Finite Element Methods
- Rotordynamic Analysis
- Hydrodynamic Gas Film Calculations
Allow prediction of . . .
- Bearing Characteristics (stiffness, damping)
- Mechanical and Thermal distortions and stresses
- Rotordynamic Performance
Concurrent analytical methods provide the opportunity to 'test' new designs without a 'make and break' hardware approach
Current activities include a three year grant effort with Penn State University to develop a coupled structural mechanics and fluid dynamics finite element computer code to predict foil bearing performance characteristics
Reports
- B. Dykas, Investigation of Thermal and Rotational Contributions to the Catastrophic Failure Mechanism of a Thin-Walled Journal Operating with Foil Air Bearings, M.S. thesis, Case Western Reserve University, 2003
- Carpino, M., and Talmage, G., A Fully Coupled Finite Element Formulation for Elastically Supported Foil Journal Bearings, Tribology Transactions
, Vol. 46, No. 4, pp. 560-565, Oct 2003
- S.A. Howard et al., Dynamic Stiffness and Damping Characteristics of a High-Temperature Air Foil Journal Bearing, Tribology Transactions , Vol. 44, No. 4, pp. 657-63, Oct 2001
- S.A. Howard, Rotordynamics and Design Methods of an Oil-Free Turbocharger, NASA CR-1999-208689, January 1999
Responsible NASA Official: Dr. Christopher DellaCorte
Curator: Michelle L. Beagle
Last Update: April 7, 2008
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