Abstract
There are many papers which deal with the vibrations of a geared-rotor system, but there are few which consider coupled lateral and torsional vibration. However, an analysis of the coupled vibration is important for reducing vibratios. This paper presents the experimental results of the vibrations of the geared-rotor system constructed by a pair of spur gears, and the results are compared with the theoretical results obtained form analysis of the coupled lateral and torsional vibration. In the response of angular acceleration in the gears, there are some resonant peaks caused by excitation relating to the mesh frequency. Also, some other resonances apear in the response of the lateral and torsional vibrations caused by mesh frequency excitation. These experimental results qualitatively coincide with the theoretical ones obtained from the analysis of the coupled vibration. Moreover, the tooth profile modification acts effectively on the vibrations of the geared-rotor system.
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