Abstract
There are many papers which dealt with the vibrations of a geared-rotor system and the gear noise, but there few papers which considered the effect of coupled lateral and torsional vibration. However, the analysis of the coupled vibration is important for reducing the vibrations and the noise. This paper presents the experimental results of the vibrations and the noise of the geared-rotor system constructed by a pair of the spur gears. In the response of angular acceleration in the gears, there are some resonant peaks caused by the excitation relating to the mesh frequency. And some other resonances appear in the response of the lateral vibration and the torsional vibration caused by the mesh frequency excitation. The gear noise is concerned mainly with the angular acceleration. Moreover, the tooth profile modification acts effectively on the noise of the geared-rotor system.
