Tooth Dynamic Contact Simulation and Experimental Validation of Involute Spur Gear

To accurately simulate the dynamic characteristics of the gear system, the real tooth profile is considered. Based on the dynamic contact algorithm with distance detection and Hertzian contact method, the dynamic contact model of the involute gear teeth is established by considering the nonlinear factors such as the time-varying meshing stiffness, damping, and friction of the gear teeth. Using the secondary development platform of Adams Subroutine, the integration of the tooth contact module and multi-tooth contact module is implemented, and the dynamic gear model of gear is proposed. The dynamic contact force of a pair of gears under a given working condition is simulated, and the dynamic bending stress of the root is calculated by the dynamic contact force and the position of the meshing point. The meshing gears are tested under different working conditions to obtain dynamic bending stress. The experimental and simulation results of the root bending stress are compared to validate the accuracy of the proposed tooth contact model.