Dynamic instability of parabolic shells in supersonic gas stream

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 m...

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Published inMeccanica (Milan) Vol. 51; no. 4; pp. 939 - 950
Main Authors Avramov, K. V., Chernobryvko, M. V., Kazachenko, O., Batutina, T. J.
Format Journal Article
LanguageEnglish
Published Dordrecht Springer Netherlands 01.04.2016
Subjects
Automotive Engineering
Civil Engineering
Classical Mechanics
Dynamic stability
Dynamic tests
Dynamics
Mathematical analysis
Mathematical models
Mechanical Engineering
Physics
Physics and Astronomy
Shell stability
Stability analysis
Vibration
Parabolic shell
Mode of self-sustained vibration
Supersonic gas stream
Frequency of self-sustained vibration
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Summary: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.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:0025-6455
1572-9648
DOI:10.1007/s11012-015-0247-4