The modal analysis and dynamic response analysis of the spoke plate of aviation spiral bevel gear are carried out. The influence of the pass parameters on the vibration acceleration is studied. The optimal design scheme of the pass damping structure is proposed. The main conclusions are as follows:
1) The driven wheel has a high frequency margin under working condition, and the natural frequency does not coincide with the meshing frequency of spiral bevel gear.
2) Dynamic response analysis is carried out for circular hole, waist hole, pillow hole and triangular hole structures with equal area and quantity. The vibration acceleration of the measuring point is: waist hole ＜ pillow hole ＜ round hole ＜ triangular hole, so the waist hole has the best vibration reduction effect.
3) Taking the signal to noise ratio of the root mean square value of the vibration acceleration as the index, the optimal combination of the structural parameters of the waist hole is determined. Compared with the original circular hole design, the vibration at the two measuring points is reduced by 33.09% and 37 62%。
The research results have certain guiding significance for the structural design of the spoke of the aviation spiral bevel gear, but the accurate results need to be verified by experiments. Due to the high speed and heavy load of aviation spiral bevel gears, the test conditions are demanding. This part will be developed in the follow-up study.