shells of revolution; Asymmetrical vibrations; thermo-elastical equilibrium reference state
Abstract :
[en] This paper describes a theory of shells of revolution. Staring with geometrical considerations, the expression of the strains is deduced. A particular form of the displacement field is then chosen, from which follow the shell strains and changes of curvature. The equilibrium equations are then deduced from a variational point of view. Constitutive equations are then stated and simplified owing to the powers of the parameter h/R. The problem of vibrations round an equilibrium state is then formulated, including the so-called stability terms.Inertia terms are then developed. IN order to treat asymmetrical vibrations, a Fourier development of the displacements is introduced, which allows a clear separation of the eigenmodes.
Disciplines :
Aerospace & aeronautics engineering
Author, co-author :
Debongnie, Jean-François ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Méthodes de fabrication
Huck, André
Mol, André
Idelsohn, Sergio
Language :
French
Title :
Vibrations asymétriques d'une coque de révolution autour d'un état d'équilibre thermo-élastique
Alternative titles :
[en] Asymmetrical vibrations of a shell of revolution round a thermo-elastic equilibrium state
Publication date :
January 1974
Publisher :
ULG/LTAS, Liège, Belgium
Report number :
VF22
Number of pages :
50
Collection name :
Rapports LTAS
Commissioned by :
CNES
Funders :
CNES - Centre National d'Études Spatiales
Commentary :
This is the theoretical work which led to the implementation of element 18 in SAMCEF
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