Numerical Analysis on Starved Elastohydrodynamic Lubrication Characteristics of Spiral Bevel Gears

Yu Tao Yan; Zhi Li Sun; Qiang Yang; Yan Zhong Wang

doi:10.4028/www.scientific.net/AMM.16-19.254

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 16-19Numerical Analysis on Starved Elastohydrodynamic...

Numerical Analysis on Starved Elastohydrodynamic Lubrication Characteristics of Spiral Bevel Gears

Abstract:

The spiral bevel gears of attack helicopter transmission systems are taken as an object in this paper. The numerical analysis model for starved elastohydrodynamic lubrication (SEHL) of spiral bevel gears is established on the basis of the analysis of load tooth contacts analysis and SEHL in elliptical contacts. The SEHL characteristics of spiral bevel gears are also analyzed. The results are as follows: during the course of a gear-tooth meshing cycle of the spiral bevel gear, the extremum of minimal film thickness and maximal film pressure occurs near midpoint of the path of contact, and leans to dedendum. The minimal value of the minimal film thickness is 0.39 um, and the maximal value of the maximal film pressure is 0.69 GPa. The value of minimal film thickness gradually increases with the increasing of meshing point velocity. When the velocity of meshing point exceeds 110 m/s, the increase became tardiness. As the load of meshing point increases, the value of minimal film thickness gently diminishes.

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Periodical:

Applied Mechanics and Materials (Volumes 16-19)

Pages:

254-258

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.16-19.254

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Online since:

October 2009

Authors:

Yu Tao Yan, Zhi Li Sun, Qiang Yang, Yan Zhong Wang

Keywords:

Maximal Film Pressure, Minimal Film Thickness, Spiral Bevel Gear, Starved Elastohydrodynamic Lubrication

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