Abstract
A new method for predicting the vibration and sound-radiation of a total gear system, including multi-stage gear pairs, shafts, pedestals, and a gearbox, was developed. The method consists of three separate analyses : gear vibration analysis, FEA, and BEA. To verify the effectiveness of the method, sound-pressure levels at two points in the horizontal and the vertical directions from a gearbox of an experimental apparatus were measured. These measurements agree well with the corresponding levels calculated by developed method. It is thus concluded that the method can accurately predict vibration and noise and can effectively design a low-noise gearbox.
