This study investigates the role of the tribo-dynamic behavior in the contact fatigue crack nucleation for spur gears. To describe this fatigue phenomenon, a six-degree-of-freedom (DOF) lumped parameter dynamics formulation is coupled with a set of mixed elastohydrodynamic lubrication (EHL) governing equations. The former provides the dynamic tooth force to the EHL analysis, and the latter yields the gear mesh damping as well as the friction excitations that are required in the gear dynamics simulation. The converged tribo-dynamic surface normal pressure and tangential shear are then used to determine the multi-axial stress fields using the potential theory based closed-form stress formulation for half space. Lastly, the stress means and amplitudes are implemented in a multi-axial fatigue criterion to assess the fatigue damage.
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ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
August 6–9, 2017
Cleveland, Ohio, USA
Conference Sponsors:
- Design Engineering Division
- Computers and Information in Engineering Division
ISBN:
978-0-7918-5824-0
PROCEEDINGS PAPER
The Effect of Spur Gear Tribo-Dynamic Response on Pitting Crack Nucleation
Anusha Anisetti
Anusha Anisetti
Wright State University, Dayton, OH
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Sheng Li
Wright State University, Dayton, OH
Anusha Anisetti
Wright State University, Dayton, OH
Paper No:
DETC2017-67003, V010T11A001; 7 pages
Published Online:
November 3, 2017
Citation
Li, S, & Anisetti, A. "The Effect of Spur Gear Tribo-Dynamic Response on Pitting Crack Nucleation." Proceedings of the ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 10: 2017 ASME International Power Transmission and Gearing Conference. Cleveland, Ohio, USA. August 6–9, 2017. V010T11A001. ASME. https://doi.org/10.1115/DETC2017-67003
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