viscous damper mounted on the driven shaft

HUANG Xiu-jin ，HE Li-dong，XIA Xue-ran

（Beijing Key Laboratory of Health Monitoring and Self-recovery for High end Mechanical Equipment，

Beijing University of Chemical Technology，Beijing 100029，China）

Abstract：Aiming at the problem of complex vibration and noise in gearbox，the vibration characteristics of gear shaft and the damping properties of viscous dampers were studied. And a novel viscous damper for controlling vibration of gear shafting system was proposed in this study. The viscous damper conducts the vibration energy consumption by connected to the gear shaft with a bearing，so as to achieve

the purpose of vibration reduction. A viscous damper-gearbox bench was built，and the damping characteristics for viscous damper acting on the driven shaft in gear shafting system was studied experimentally. The studied results show that the viscous damper could effectively suppress the respective frequency vibration components of the gear shafting system，achieving vibration amplitude reduction up to 55.4% and 65.2% for the drive shaft and the driven shaft respectively，thus ensuring the stability of the gear shafting system.

Key words：viscous damper；gear shafting；vibration；noise；vibration reduction