Teeth meshing stiffness is calculated by tooth contact analysis and load tooth contact analysis, and 12-degree of freedom nonlinear double helical gear vibration model is established considering meshing stiffness, corner mesh impact, and backlash. With the ship transmission system as an example, the vibration characteristics of left meshing gear pair under multi-load are studied. The results show that the system vibration under meshing stiffness excitation and corner mesh impact excitation both increase with the load torque increased, and that the corner mesh impact excitation is more sensitive to changes in load than meshing stiffness excitation. However, vibration of the system decreases with the external load in backlash excitation. Meanwhile, the corner mesh impact has a growing effect on the system vibration with the load while the meshing stiffness and backlash excitation have diminishing effects.
Wang Feng; Fang Zong-de; Li Sheng-jin.
Dynamic characteristics of double helical gear under multi-load cases[J]. Journal of Vibration and Shock, 2013, 32(1): 49-52