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

[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.

[发布机构] 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

[效力级别] 无线电电子学

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