Parametric Modeling and Stress Analysis of Automobile Transmission Gears

In this paper, Pro/E software is used building an accurate parameterized cylindrical helical gear model, which is an accurate analysis model for ANSYS finite element analysis. The finite element calculation is conducted by use of the software ANSYS, analyzing the position of the most unfavorable load line of involute helical gear engagement as well as applying load on gear in virtue of the most unfavorable load line, increasing the accuracy of analysis and calculation of gear strength, and offering more accurate data for gear design. At the meantime, the effect of different fillets on the maximum root stress is studied, providing a quantitative basis for the case hardening method that enhances the bending strength of gear.