Abstract
There are many papers dealing with the vibrations of a geared-rotor system. Recently, the dynamic behavior of the geared system has been analyzed. However many of them have studied only the dynamic load on the tooth, or have left the tooth rigidity and the flexural rigidity of the shaft out of consideration. But it is important to consider the effect of coupled lateral and torsional vibration. This study presents the experimental results of the vibrations and the noise of the geared-rotor system with a journal bearing. The following results are obtained. In response to 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 response to the lateral vibration and the torsional vibration caused by the mesh frequency excitation. The gear noise is concerned mainly with the vibration of the tooth.
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