On dynamic modeling of distributed gyros flexible structures

被引：0
|
作者：
Chen J. [1 ]
Jin D.-P. [1 ]
Liu F.-S. [2 ]
机构：
[1] State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing
[2] School of Civil Engineering, Nanjing Forestry University, Nanjing
来源：
Zhendong Gongcheng Xuebao/Journal of Vibration Engineering | 2020年 / 33卷 / 01期
关键词：
Gyros flexible structure; Modal superposition; Original flexible structure mode; Reduced order model; Structural dynamics;
D O I：
10.16385/j.cnki.issn.1004-4523.2020.01.008
中图分类号：
学科分类号：
摘要：
The paper deals with dynamic modeling of flexible structures with control moment gyros, using finite element method and modal superposition. The influence of the coupling between the structure and the gyros on the natural vibration of the structure is studied. Based on the finite element discretization method, the equations of motion of the flexible structure including the distributed control moment gyros are obtained. Compared with the modal superposition method, the concept of original flexible structure mode is proposed for the first time. Numerical results show that distributed control torque gyros have an essential effect on the natural vibration of structures. The reduced dynamic model established by the modal superposition method based on the first several modes of the original structure has a massive error because of the coupling effects between the structure and the gyros. © 2020, Nanjing Univ. of Aeronautics an Astronautics. All right reserved.
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页码：74 / 81
页数：7
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