Vibration characteristics of two-stage planetary transmission system with thin-walled ring gear on elastic supports

2017 2nd International Conference on Mechatronics and Electrical Systems

机械制造;无线电电子学

Li, Jianying^1 ; Hu, Qingchun^2 ; Zong, Changfu^1 ; Zhu, Tianjun^1 ; Zhang, Zexing^1

School of Mechanical and Automotive Engineering, Zhaoqing University, Zhaoqing

526061, China^1

School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou

510640, China^2

关键词: Motion differential equation;    Planetary transmission;    Theoretical research;    Time-varying mesh stiffness;    Torsional vibration;    Translational vibration;    Vibration characteristics;    Vibration displacements;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/339/1/012010/pdf
DOI  :  10.1088/1757-899X/339/1/012010

来源: IOP

【 摘 要 】

A dual-clutch and dual-speed planetary gears mechanism of a hybrid car coupled-system is taken as research subject, in which the ring gear of planet set II is a thin-walled structure and the clutch friction plates of planet set II are used as its elastic supports. Based on the lumped parameter-rigid elastic coupled dynamic model of two-stage planetary transmission system with thin-walled ring gear on elastic supports, the motion differential equations are established and the dynamic responses are solved by the Runge-Kutta method considering each stage internal and external time-varying mesh stiffness. The vibration displacements of each stage ring gear have been affected differently in time-domain, the translational vibration displacement of the ring gear of planet set I are obviously more than the torsional vibration displacement, but it is opposite for the ring gear of planet set II; The translational and torsional vibration responses of each stage ring gear arrive the peak in low-frequency. The analysis results of this paper can enrich the theoretical research of multistage planetary transmission and provide guidance for dynamic design.