Study on gearbox noise reduction based on dichotomy method
In order to solve the problem of severe vibration response and excessive radiation noise when the gearbox of a household electric appliance is working.Based on the principle of active control and dichoto-my,finite element method and boundary element method are used to evaluate the noise reduction of differ-ent application positions of secondary force sources without affecting the external structure size of the gear-box.The results show that the secondary force source is applied to the surface of the gearbox box as deter-mined by the dichotomy method,the mean sound pressure level of the gearbox radiated noise is 59.619dB in the frequency of 500Hz～2500Hz,which is 8.997 dB lower than that without control.It provides some reference for the research of vibration and noise reduction of this kind of products.
active noise reductionvibration controldichotomysecondary force sourcegearbox
万方数据
维普
