Modeling of dynamic efficiency of spur gear pairs based on elastohydrodynamic lubrication and its validation

作者：Chen Xinbo; Lu Zhijian^*

来源：Journal of Tongji University(Natural Science), 2013, 41(5): 773-778.

DOI：10.3969/j.issn.0253-374x.2013.05.023

• Computational formula
• Dynamic efficiency
• Friction coefficients
• Lubricant viscosity
• Matlab/simulink models
• Modeling of dynamics
• Modifying factors
• Spur gear pairs

The characteristics and law of spur gears meshing were analyzed based on the elastohydrodynamic lubrication. Then a MATLAB/Simulink model was proposed for the prediction of mechanical dynamic efficiency of spur gear pairs by investigating on the computational formulas of key factors such as friction coefficients, load distribution, film thickness and so on. A period defined from the start point of meshing to the end point of meshing along line of action was divided into four parts for an easier computation of the average sliding and rolling power losses. Meanwhile, a modifying factor was rationally introduced to account for the effect of variable lubricant viscosity. The simulation results were compared with test data and the results from other prediction models. The comparative results show that the proposed prediction model is accurate.

• 出版日期2013
• 单位同济大学