Semi-analytical study of free vibration characteristics of shear deformable filament wound anisotropic shells of revolution

2009 ◽  
Vol 319 (1-2) ◽  
pp. 260-281 ◽  
Author(s):  
Altan Kayran ◽  
Erdem Yavuzbalkan
Keyword(s):  
Free Vibration ◽  
Analytical Study ◽  
Vibration Characteristics ◽  
Shells Of Revolution ◽  
Filament Wound ◽  
Anisotropic Shells ◽  
Shear Deformable

Effect of Semi-Geodesic Winding on the Vibration Characteristics of Filament Wound Shells of Revolution

2011 ◽  
Vol 78 (6) ◽  
Author(s):  
Altan Kayran ◽  
Can Serkan İbrahimoğlu
Keyword(s):  
Free Vibration ◽  
Natural Frequencies ◽  
Vibration Characteristics ◽  
Vibration Modes ◽  
Integration Technique ◽  
Shells Of Revolution ◽  
Spherical Shells ◽  
Filament Wound ◽  
Winding Angle ◽  
Dominant Parameter

The effect of semigeodesic winding on the free vibration characteristics of filament wound shells of revolution is studied. For this purpose multisegment numerical integration technique is extended to the solution of the free vibration problem of composite shells of revolution which are wound along the semigeodesic fiber paths counting on the preset friction used during the winding process. Sample results are obtained for truncated conical and spherical shells of revolution and the effect of preset friction on the vibration characteristics of filament wound shells of revolution is particularly analyzed. Results show that when the preset friction is increased natural frequencies of higher circumferential vibration modes also increase irrespective of the initial winding angle, and the circumferential bending stiffness stands out as the dominant parameter governing the natural frequencies of higher circumferential vibration modes.

Free Vibration Characteristics of Composite Shells of Revolution With Variable Stiffness Coefficients

2008 ◽  
Author(s):  
Altan Kayran
Keyword(s):  
Free Vibration ◽  
Constitutive Relations ◽  
Variable Stiffness ◽  
Vibration Characteristics ◽  
Filament Winding ◽  
Shell Of Revolution ◽  
Composite Shells ◽  
Shells Of Revolution ◽  
Stiffness Coefficients ◽  
Filament Wound Composite

In the present study, the effect of initial winding angle, and the starting edge of the winding operation on the variation of the thickness, stiffness coefficients and undamped free vibration characteristics of filament wound composite shells of revolution are investigated. Filaments are assumed to be placed along the geodesic fiber path on the surface of the shell of revolution resulting in the variation of the stiffness coefficients and thickness along the axis of the composite shell of revolution with general meridional curvature. The study is performed by a semi-analytical solution method which exploits the combination of the numerical integration technique, and a modified frequency trial method. The governing shell of revolution equations comprise the full anisotropic form of the constitutive relations, including first order transverse shear deformation, and all components of translatory and rotary inertia. Results are obtained for conical and spherical shells of revolution manufactured by the filament winding process, and the effect of the winding pattern on the vibration characteristics of shells of revolution is investigated thoroughly.

scholarly journals Free Vibration of Rotating Anisotropic Shells of Revolution.

1993 ◽  
Vol 59 (566) ◽  
pp. 3052-3057 ◽  
Author(s):  
Hirotake Igawa ◽  
Takashi Saitoh ◽  
Mitsuru Endo
Keyword(s):  
Free Vibration ◽  
Shells Of Revolution ◽  
Anisotropic Shells
Sign in / Sign up

Export Citation Format

Share Document