Vibration Characteristics Analysis of Joint with Multiple Clearances in Space Mechanism

doi:10.3901/JME.2017.11.044

Abstract

Abstract:

A dynamic model with multiple clearances of planetary gear joint is proposed to analyze the vibration characteristics. The model includes the coupling relation of multiple clearances in planetary gear joint. It also includes time variation of gear mesh stiffnesses. Then, by using numerical simulation method, the vibration characteristics of planetary gear system influenced by rotational speed, clearance size and inertia load are presented and discussed in frequency domain. The results show that there are complex coupling relationships among different vibrations in system, because the effect of multiple clearances coupled. The resonance phenomenon will occur for changes in rotational speed and clearances’ size. When the inertia load is relatively large, the joint has high movement accuracy. But the amplitude of vibration in joint is relatively large in empty-load or light-load.

Key words: multiple clearances, planetary gear, vibration characteristics, space mechanism

ZHANG Huibo, CHEN Zikun, WEI Cheng, ZHAO Yang, YOU Bindi. Vibration Characteristics Analysis of Joint with Multiple Clearances in Space Mechanism[J]. Journal of Mechanical Engineering, 2017, 53(11): 44-53.

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Vibration Characteristics Analysis of Joint with Multiple Clearances in Space Mechanism

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