Automobile transmission gear modeling and contact stress analysis

The automobile transmission gear is one of the transmission modes used in machine transmission and it is widely used because of its high effect and stable transmission. In this paper, aimed at an automobile transmission gear, the composition and working principle of the reducer are introduced in detail. Considering that the contact stress has a great effect on the gear transmission of the reducer, exploring the dynamic and static contact stress of the involute spur gear has a crucial effect on improving the life and contact strength of the gear. Parametric modeling of the reducer gear is completed using 3D modeling soft SolidWorks, then the 3D solid model of the reducer gear is imported into ANSYS, and the modal analysis of the gear reducer is performed to obtain the gear. To simplify the computation process, a three-tooth model is established, and contact stress analysis is fulfilled. The results of the analysis provide a certain reference value for the design and manufacture of automotive reducer gears.