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22 June 2000 Effects of tooth damage on spur gear vibrations
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The geared servomechanism is an important device used in many industrial applications for transferring power and motion. Over time, the meshing of gear teeth will lead to wear and damage. In this paper, the dynamics of a spur gear pair with damage to a single tooth will be instigated. Damage associated with the formation of a fillet crack and spalling will be simulated. The dynamic forces induced often result in a higher level of noise and vibration within the gear system. The prime direction of the present work is to study the effects of damage on the transient and steady-state vibration response of a spur gear pair. Simulation results indicate that damage significantly affects the response of the system and may accelerate tooth failure.
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Donald A. Richards and Darryll J. Pines "Effects of tooth damage on spur gear vibrations", Proc. SPIE 3985, Smart Structures and Materials 2000: Smart Structures and Integrated Systems, (22 June 2000);

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