Dynamic analysis of spur gears considering dynamic stiffness and geometric eccentricity

In gear work, the gear transmission system will inevitably have postpartum geometric eccentricity due to the influ-ence of assembly and manufacturing. This phenomenon can cause the center of rotation to not match the center of mass, which further affects the dynamic response of the gear system. In this pa-per, a dynamic model of the gear shaft based on the transfer method is proposed to consider the geometric eccentricity fault of the gear, and the factor of the meshing stiffness with the velocity is also considered during the gear meshing process. Finally, the dynamic re-sponse under different eccentricity and initial eccentricity angle is discussed.