Modeling and Dynamic Characteristics of Planetary Gear Transmission in Non-inertial System of Aerospace Environment

被引：2
|
作者：
Wei J. [1 ]
Shi L. [1 ]
Zhang A. [1 ]
Qin D. [1 ]
机构：
[1] State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing
来源：
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2019年 / 55卷 / 23期
关键词：
Dynamics behavior; Gear dynamics; Non-inertial system; Planetary gear transmission system; Spatial motion;
D O I：
10.3901/JME.2019.23.162
中图分类号：
学科分类号：
摘要：
The traditional research on the dynamics of planetary gear transmission system is based on the assumption that the support is on the ground. However, the planetary gear transmission system inside the aircraft is spatially moved along with the airframe, which is subjected not only to gravity, but also to convected inertia force and Coriolis inertia force, as well as gyroscopic moment. These force affects the dynamic characteristics of the planetary gear transmission system. In order to investigate the dynamic behavior of planetary gear transmission system in non-inertial system of aerospace environment, the equations of motion of the central component and planetary gear in arbitrary spatial motion state of the airframe are deduced considering the influence of internal non-inertial system and external non-inertial system comprehensively. Subsequently, the coupling dynamic model of planetary gear transmission system in non-inertial system of aerospace environment is established. The motion variation law of planetary gear transmission system in the non-inertial system and the dynamic behavior of each components in different non-inertial conditions are researched based on the hovering motion of the airframe. The results indicate that the equilibrium position of the planetary gear is greatly offset due to the influence of non-inertial system inside the planetary gear train when the airframe has no spatial motion. Moreover, the gravity on each component will generate radial force, which and additional inertial force will change with the external non-inertia conditions when the airframe is in the state of spatial motion. In addition, different non-inertial conditions have significant influence on the motion trajectory, bearing force and acceleration of each component, and have different influence rules on the central component and planetary gear. © 2019 Journal of Mechanical Engineering.
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页码：162 / 172
页数：10
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