Dynamic instability of parabolic shells in supersonic gas stream

被引：0
|
作者：
K. V. Avramov
M. V. Chernobryvko
O. Kazachenko
T. J. Batutina
机构：
[1] National Academy of Science of Ukraine,Department of Vibrations, Podgorny Institute for Mechanical Engineering
[2] Design office “Yuzhnoe”,undefined
来源：
Meccanica | 2016年 / 51卷
关键词：
Parabolic shell; Mode of self-sustained vibration; Supersonic gas stream; Frequency of self-sustained vibration;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The dynamic instability of the parabolic shells in a supersonic gas flow is analyzed numerically. Such structures describe a rocket fairing. Finite degrees of freedom dynamical system is obtained by the assumed-modes method to describe the shell motions. The numerical approach for calculations the modes of the shell self-sustained vibrations is suggested. The Mach numbers range of the shell dynamic instability is analyzed numerically. The influence of the paraboloid height on the regions of the dynamic instability is analyzed. The frequencies of the self-sustained vibrations are investigated. The effect of the shell boundary conditions on the regions of the dynamic instability is analyzed.
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页码：939 / 950
页数：11
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