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Structures and Materials Division Research and Technology Directorate NASA Glenn Research Center

Tribology and mechanical Components Branch
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Oil-Free Turbomachinery - Analytical Modeling
Overview
Advances in finite element methods, hydrodynamic gas film calculations, and rotordynamic analysis enable improved prediction of:
  • bearing characteristics (Ks and Bs)
  • mechanical and thermal distortions and stresses
  • rotordynamic performance
Analytical methods provide the opportunity to evaluate, refine, and optimize new designs in advance of hardware fabrication.

Finite Element Model of Oil-Free Turbocharger Rotor
 
Above: Finite Element Model of Oil-Free Turbocharger Rotor
 

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Dr. Christopher DellaCorte
Publications
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Enabling Technologies
Oil-free journal bearings
Foil Bearings

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Oil-free PM304 lubricant
Tribological Coatings

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Foil bearing operating at high temperature
Technology Overview

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Last Updated: April 21, 2009