Modal analysis of transverse vibration of a spinning rocket based on Timoshenko beam

被引：0

作者：

Rong, Ji-Li ^{[1
]}

Xu, Tian-Fu ^{[1
]}

Li, Jian ^{[1
,2
]}

机构：

[1] School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China

[2] Department of Automobile Engineering, Guangxi University of Technology, Liuzhou, Guangxi 545006, China

来源：

Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology | 2012年 / 32卷 / 06期

关键词：

Modal analysis - Vibration analysis - Shear flow - Particle beams - Free flight - Rockets;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The spinning rocket is simply modeled as a Timoshenko rotor. The natural modal of transverse vibration of spinning rocket in free flight is studied based on finite element method. Under consideration of gyro-effect and shear effect, finite element equation and frequency equation of transverse vibration of the spinning rocket are both presented based on Timoshenko beam model and theory of rotor dynamics. With the aid of presented frequency equation, modal analysis of a certain rocket could be made by adopting Rayleigh beam and Timoshenko beam model separately. Further, precession frequencies of transverse vibration of the rocket for different beam models have been contrasted and the discussion about the effects of rotate speed and slenderness ratio of the rocket on the inherent characteristics has been done.

引用

页码：551 / 555