Abstract
Two methods of analyzing vibratory response of helical gear system including gearbox are proposed. In the first method, gear shaft system and gearbox system are assembled to one FE-model and response analysis is done to mesh exciting force. In the second method, response analysis of gear shaft system is done separated from gearbox system and dynamic bearing forces are evaluated. Next, dynamic bearing forces are given to gearbox and response analysis of the gearbox is done. These two analysis methods are applied to single stage gearbox that a pair of helical gears with tooth surface modification is built in. The analytical and experiment results show that these methods are effective.
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