Abstract
Gearbox is the main component in an Automotive transmission system. As various incentive acting on the transmission system, complex vibration and noise are produced to the gearbox. This affecting the performance of a vehicle car seriously. Taking a heavy vehicle transmission as experimental object, which the finite element modal simulation analysis; According to the actual condition fault mechanism transmission and vibration characteristics, design the vibration and noise test system, for the collected vibration and noise signal PSD analysis. Modal simulation analysis points out the transmission design weak area, and for its structure optimization design provides a basis; Vibration and noise signal PSD analysis and modal analysis results, there are 2350Hz compared the frequency of around. About 2350Hz frequency of the dynamic characteristics of transmission research has the extremely vital significance.
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