Influence of Tooth Surface Friction on Dynamic Meshing Characteristics of Elliptic Gears

Dynamic friction of gear transmission system is closely related to power loss and transmission performance, and tooth surface friction is also the main source of vibration and noise of gear system. Giving the special application and working conditions of elliptic gears, the LTCA model of elliptic gears is established to analyze the dynamic meshing characteristics of elliptic gears under different friction coefficients. The analysis shows that with the increase of friction coefficient, the effective plastic strain, effective stress, tooth surface pressure and stress of the elliptic gear tooth surface show an increasing trend, which indicates that the tooth surface friction has a great influence on the dynamic meshing characteristics of the system, and it is very important to select the appropriate friction coefficient in the analysis. The research results can provide a theoretical basis for the dynamic design and engineering application of non-circular gears represented by elliptic gears, and the proposed analysis method can be applied to other types of gears, which provides a new idea and method for the subsequent analysis of dynamic meshing characteristics of gears.