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Shock and Vibration
Volume 2016 (2016), Article ID 4304525, 11 pages
http://dx.doi.org/10.1155/2016/4304525
Research Article

Nonlinear Vibroimpact Characteristics of a Planetary Gear Transmission System

1School of Mechanical Engineering, Xinjiang University, Urumqi 830047, China
2Center for Post-Doctoral Studies of Mechanical Engineering, Urumqi 830047, China

Received 31 July 2015; Revised 8 November 2015; Accepted 23 November 2015

Academic Editor: Juan P. Amezquita-Sanchez

Copyright © 2016 Jianxing Zhou et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In order to research the vibroimpact characteristics of a planetary gear transmission system under high speed and lightly loaded conditions, a new modeling method is proposed. In the modeling process, linear spring was used to simulate gear mesh elasticity under heavy load cases, and Hertz contact theory was used to calculate the contact force of gear pair under light load cases. Then, effects of the working conditions on the system vibroimpact characteristics are analyzed. The results show that, with input speed growing, the mesh force produced obvious fluctuations on the resonance frequencies of the sun gear and carrier torsion vibration, ring gear’s transverse vibration under the heavy load. Under light load condition, the collision vibration occurs in the gear pair; the changing trend of the contact force shows strongly nonlinear characteristics. The time of mesh-apart in gears pair decreases gradually as the load is increased; until it reaches collision vibration threshold value, the gear pair is no longer mesh-apart. With increasing of the input speed, the time of mesh-apart is decreased gradually; the fluctuation amplitude of contact force shows a linearly increasing trend. The study provides useful theoretical guideline for planetary gear transmission low-noise design.