Rigid-flexible coupling and acoustic-vibration coupling analysis of high-speed double helical planetary gear system

Inhalt:
In order to obtain the vibration and noise characteristics of the high-speed double helical planetary gear system, a rigid-flexible coupling dynamic model is established, and the dynamic response of the nodes on the surface of the gearbox is calculated. The peak value of the vibration acceleration frequency response at the evaluation points mainly occurs at the rotation frequency, meshing frequency and its frequency multiplication. An acoustic-vibration coupling model including structural mesh, acoustic mesh and field point mesh is established, the radiated noise on the surface of the gearbox and the field points is calculated by using indirect acoustic finite method. The maximum value of the sound pressure on the surface of the gearbox and the sound pressure of the field points appeared at the position of the input shaft, and the peak value of the radiated noise at each field points mainly occur near the rotation frequency of the gear pair and its meshing frequency.