This paper presents an analytical and computer-aided study on the vibroacoustic properties of disturbed gear tooth meshing. The author concentrated on modelling of disturbances caused by shafts slide bearing clearance. While assuming that the largest effect is caused by the disturbance of the contact cycle duration and the change in contact from one to two-pair and vice versa, an effect of transmission error was observed especially visible as phase modulation. There are considered both the disturbances influence on the sliding velocity and the meshing force.
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