| Citation: | YUE Huijun, ZHANG Yao, LI Hongbiao, et al. Transmission gear vibration mechanism and modification method for vibration and noise reduction[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(10): 2003-2010. doi: 10.13700/j.bh.1001-5965.2016.0814(in Chinese)
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This paper discusses the vibration mechanism of gear transmission and modification methods to reduce vibration and noise with a specific automatic transmission as the research object. Using SimulationX and test methods, the gears that have the most contribution to system vibration can be found. The internal excitation of the helical gear was analyzed with the method of finite element simulation, including transmission errors, contact spots, meshing impact and thermo-elastic deformation. Considering the minimum fluctuation amplitude of the transmission errors, meshing impact elimination and the optimal contact status as a comprehensive objective, the optimal gear modification was obtained after comparison with plenty of simulation results. Based on the test results after modification, it is verified that the proposed modification scheme can optimize the transmission status and further effectively reduce the vibration and noise of transmission.
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