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Efficiency of Nonstandard and High Contact Ratio Involute Spur Gears
Abstract
A power loss prediction method previously developed by the authors was extended to include involute spur gears of nonstandard proportions. The method can now be used to analyze the effects of modified addendum, tooth thickness, and gear center distance in addition to the parameters previously considered which included gear diameter, pitch, pressure angle, face width, oil viscosity, speed, and torque. Particular emphasis is placed on high contact ratio gearing (contact ratios greater than two). Despite their higher sliding velocities, high contact ratio gears can be designed to levels of efficiency approaching those of conventional gears while retaining their advantages through proper selection of gear geometry.
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“Recognizing that µ actually varies as gears roll owing to the variations of the contact parameters such as radius of curvature, normal load, sliding and rolling velocities, the works such as (3) relied on published empirical µ formulae.”
From A Method to Derive Friction and Rolling Power Loss Formulae for Mixed Elastohydrodynamic Lubrication (2011) · cites this paper as [3]
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Prediction of Mechanical Efficiency of Parallel-Axis Gear Pairs
Xu, H., Kahraman, A., Anderson, N. E., & Maddock, D. G. (2007) · Journal of Mechanical Design · doi:10.1115/1.2359478 · Cited by 323
Self-citationPrediction of mechanical gear mesh efficiency of hypoid gear pairs
Kolivand, M., Li, S., & Kahraman, A. (2010) · Mechanism and Machine Theory · doi:10.1016/j.mechmachtheory.2010.06.015 · Cited by 117
A Method to Derive Friction and Rolling Power Loss Formulae for Mixed Elastohydrodynamic Lubrication
LI, S., & KAHRAMAN, A. (2011) · Journal of Advanced Mechanical Design, Systems, and Manufacturing · doi:10.1299/jamdsm.5.252 · Cited by 45
Metadata
- Authors
- Anderson, N. E., & Loewenthal, S. H.
- Affiliations
- Glenn Research Center (US)
- ORCID
- Anderson, N. E.
- Venue
- Journal of Mechanisms, Transmissions, and Automation in Design
- Publisher
- ASME International
- Published
- 1986-03-01
- Volume
- 108
- Issue
- 1
- Pages
- 119-126
- ISSN
- 0738-0666 (ISSN-L)
- OpenAlex
- W2090353012
- Cited by
- 58
- References
- 0
- Citations by year
- 2026: 2 · 2025: 2 · 2024: 2 · 2022: 5 · 2021: 1 · 2020: 4 · 2019: 4 · 2018: 3 · 2017: 2 · 2016: 2 · 2015: 2 · 2014: 3 · 2013: 2 · 2012: 1
- FWCI
- 1.40
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Mechanisms Transmissions and Automation in Design (publishedVersion)
- NASA STI Repository (National Aeronautics and Space Administration) (submittedVersion)
- NASA Technical Reports Server (NASA)
- Topics
- Physical Sciences › Engineering › Mechanical Engineering › Gear and Bearing Dynamics Analysis
- Physical Sciences › Engineering › Mechanical Engineering › Tribology and Lubrication Engineering
- Physical Sciences › Engineering › Mechanical Engineering › Advanced Measurement and Metrology Techniques
- Keywords
- involute spur gears, gear efficiency, power loss prediction, tooth thickness, sliding velocity, gear geometry
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