Vibro-acoustic propagation of gear dynamics in a gear-bearing-housing system |
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Authors: | Yi Guo Tugan Eritenel Tristan M Ericson Robert G Parker |
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Institution: | 1. National Renewable Energy Laboratory, 15013 Denver West Parkway, Golden, CO 80401-3305, United States;2. Romax Technology Inc., 2760 29th Street STE 2E, Boulder, CO 80301, United States;3. Department of Physical Sciences, York College of Pennsylvania, York, PA 17403, United States;4. Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA 24061, United States |
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Abstract: | This work developed a computational process to predict noise radiation from gearboxes. It developed a system-level vibro-acoustic model of an actual gearbox, including gears, bearings, shafts, and housing structure, and compared the results to experiments. The meshing action of gear teeth causes vibrations to propagate through shafts and bearings to the housing radiating noise. The vibration excitation from the gear mesh and the system response were predicted using finite element and lumped-parameter models. From these results, the radiated noise was calculated using a boundary element model of the housing. Experimental vibration and noise measurements from the gearbox confirmed the computational predictions. The developed tool was used to investigate the influence of standard rolling element and modified journal bearings on gearbox radiated noise. |
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