Research on Vibration Characteristics of Spur Gear System with Pitting Fault Considering the Elastohydrodynamic Lubrication Condition

Pitting fault is easily observed in gear system, dynamics models are commonly established to study the vibration characteristics affected by pitting fault. However, most of the dynamics models ignore the elastohydrodynamic lubrication (EHL) in gear system, which plays an important role in early fati...

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Bibliographic Details
Published in2018 18th International Conference on Control, Automation and Systems (ICCAS) pp. 1295 - 1299
Main Authors Deng, Chunlong, Shao, Yimin, Zheng, Hongling, Du, Minggang, Yang, Yang
Format Conference Proceeding
LanguageEnglish
Published Institute of Control, Robotics and Systems - ICROS 01.10.2018
Subjects
3D-EHL
Dynamics
Friction
Gear
Gears
Lubrication
Pitting fault
Surface topography
Vehicle dynamics
Vibration characteristics
Vibrations
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Summary:Pitting fault is easily observed in gear system, dynamics models are commonly established to study the vibration characteristics affected by pitting fault. However, most of the dynamics models ignore the elastohydrodynamic lubrication (EHL) in gear system, which plays an important role in early fatigue failure of gears. Therefore, a dynamics model is proposed to study the vibration characteristics of spur gear system with pitting fault based on the three-dimensional line contact elastohydrodynamic lubrication (3D-EHL) model. In this model, both the transverse torsional dynamics model with gear pitting fault and the 3D-EHL model are coupled through an iterative method. Firstly, the transient rolling and sliding velocity, radius of curvature, and dynamic tooth force will be calculated based on the transverse torsional dynamics model, and which are then applied in the 3D-EHL model to perform contact analysis on a single continuously meshing teeth pair. Secondly, the transient pressure and film thickness distribution calculated based on the 3D-EHL model are used to determine the rolling, sliding friction, and viscous damping of the gear pair. After that, these parameters are substituted into the dynamics model to obtain the vibration characteristics of gear system with pitting fault. Finally, different working conditions are compared based on the proposed model, the results show that the EHL has an effect on the vibration characteristics of gear system with pitting fault.