Abstract:

In order to reveal the effects of sliding friction and phase tuning on the dynamics of the two-path and load-share sun-geared system, a model describing the coupling of torsional and transverse vibrations of the system is developed, with the parameters such as the time-varying meshing stiffness, the meshing damping, the sliding friction, the meshing phase, the bearing stiffness and the bearing damping being considered. By analyzing the meshing process of the spur gear pair, some expressions of the sliding friction are deduced. Moreover, the effects of the slid- ing friction and the phase tuning on the dynamic transmission error of the system and the dynamic bearing load are investigated by performing a numerical simulation. The results show that the sliding friction greatly influences the dynamic bearing load, and that the phase tuning technique effectively reduces the dynamic transmission error of the system and the dynamic bearing load on the sun gear.

Key words: two-path and load-share sun-geared system, sliding friction, phase tuning, dynamic analysis