Nonlinear Dynamic Analysis of a Rigid–Flexible Gear Transmission Considering Geometric Eccentricities

Abstract

Nonlinear vibration, a main factor affecting the dynamic stability, widely exists in the transmission system. In addition, geometric eccentricities caused by the manufacturing errors are inevitable in the gear transmission system, which may lead to the excessive nonlinear vibration. In order to suppress the nonlinear vibration under the excitation of the geometric eccentricities, a rigid–flexible gear pair consisting of the ring gear, the composite material, and the hub is proposed in this study. A dynamic model with nine degrees-of-freedom which considers geometric eccentricities is proposed to analyze the nonlinear dynamic characteristics of the rigid–flexible gear pair. Furthermore, the dynamic characteristics of the rigid–flexible gear pair and the rigid gear pair are compared within a wide range of operating conditions. The comparative analysis demonstrates that the rigid–flexible gear pair has better vibration suppression effect on the system.

Study on nonlinear vibration and primary resonance characteristics of helicopter face gear-planetary gear coupling transmission system

“…Gu et al 21 studied the influence of gear position error on the multi-mechanical characteristics of planetary gear. Geng et al 22 studied the effect of eccentricity error excitation on the dynamic characteristics of single-pair gear. Zhang et al 23 take into account machining error distortion when established gear dynamic model, provided two ways to modify machining error distortion, and experimental and numerical analyses were used to validate the modification techniques.…”