The behavior and life of a tilted flat thrust washer bearing is modeled by a comprehensive numerical code. The goal is to investigate the conditions that distress thrust washer bearings through numerical techniques. This work includes thermo-mechanical deformations (which have been neglected in previous studies). The thrust washer bearing supports non-axisymmetric loads within the planetary gear sets of automatic transmissions and consists of flat-faced washers placed between an idle helical gear and its contacting face. Various coupled numerical schemes model sliding friction, boundary lubrication, asperity contact, thermo-mechanical deformation, thermo-viscous effects, and full film lubrication. The model provides predictions of frictional torque, bearing temperature, hydrodynamic lift and other indicators of bearing performance. The experimental and numerical results show that the bearing is very susceptible to the mechanism of thermoelastic instability (TEI). Theoretical predictions indeed predict that the washer may operate in the range of TEI.
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World Tribology Congress III
September 12–16, 2005
Washington, D.C., USA
Conference Sponsors:
- Tribology Division
ISBN:
0-7918-4202-9
PROCEEDINGS PAPER
The Thermoelastic Behavior of Thrust Washer Bearings Considering Boundary Lubrication and Asperity Contact
Robert L. Jackson,
Robert L. Jackson
Auburn University, Auburn, AL
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Itzhak Green
Itzhak Green
Georgia Institute of Technology, Atlanta, GA
Search for other works by this author on:
Robert L. Jackson
Auburn University, Auburn, AL
Itzhak Green
Georgia Institute of Technology, Atlanta, GA
Paper No:
WTC2005-63240, pp. 39-40; 2 pages
Published Online:
November 17, 2008
Citation
Jackson, RL, & Green, I. "The Thermoelastic Behavior of Thrust Washer Bearings Considering Boundary Lubrication and Asperity Contact." Proceedings of the World Tribology Congress III. World Tribology Congress III, Volume 2. Washington, D.C., USA. September 12–16, 2005. pp. 39-40. ASME. https://doi.org/10.1115/WTC2005-63240
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