Vibration Characteristics Analysis of Planetary Gears with a Multi-Clearance Coupling in Space Mechanism

Huibo Zhang, Chaoqun Qi, Jizhuang Fan, Shijie Dai and Bindi You
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Huibo Zhang: School of Mechanical Engineering, Hebei University of Technology, Tianjin 300130, China
Chaoqun Qi: School of Mechanical Engineering, Hebei University of Technology, Tianjin 300130, China
Jizhuang Fan: State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
Shijie Dai: School of Mechanical Engineering, Hebei University of Technology, Tianjin 300130, China
Bindi You: School of Naval Architecture and Ocean Engineering, Harbin Institute of Technology at Weihai, Weihai 264209, China

Energies, 2018, vol. 11, issue 10, 1-17

Abstract: Multi-clearance is the main cause for the performance and reliability decline of complicated mechanical systems. The increased clearance could induce contacts and impacts in joints, and consequently affect control accuracy. A nonlinear dynamic model of planetary gears with multi-clearance coupling is proposed in the current study to investigate the mechanism of influence of clearance on the dynamic performance. In addition, the coupling relationship between radial clearance and backlash is integrated into the multi-body system dynamics. The vibration characteristics of planetary gears with the changes of rotational velocity, clearance size and inertia load are explored. The numerical simulation results show that there are complex coupling relations in planetary gear systems, due to the multi-clearance coupling. The phenomenon of system resonance may occur with the changes of rotational velocities and clearances’ sizes. Multi-clearance coupling can significantly increase the resonant response of planetary gear systems in empty-load or light-load states.

Keywords: space mechanism; multi-clearance; nonlinear dynamic model; planetary gears; vibration characteristics (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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