Vibration analysis of rotating composite cylindrical shells with orthogonal stiffeners

1998 ◽  
Vol 69 (2) ◽  
pp. 271-281 ◽  
Author(s):  
Young-Shin Lee ◽  
Young-Wann Kim
Keyword(s):  
Vibration Analysis ◽  
Cylindrical Shells ◽  
Orthogonal Stiffeners ◽  
Composite Cylindrical Shells

Stability and Vibrations of Compressed, Aeolotropic, Composite Cylindrical Shells

1982 ◽  
Vol 49 (4) ◽  
pp. 843-848 ◽  
Author(s):  
J. B. Greenberg ◽  
Y. Stavsky
Keyword(s):  
Fiber Orientation ◽  
Vibration Analysis ◽  
Solution Method ◽  
Cylindrical Shells ◽  
Critical Buckling Load ◽  
Method Of Solution ◽  
The Stability ◽  
Winding Angle ◽  
General Method ◽  
Composite Cylindrical Shells

A general method of solution, based on a complex finite Fourier transform, is adopted for the stability and vibration analysis of compressed, aeolotropic, composite cylindrical shells. A major feature of the solution method is its ability to handle both uniform and nonuniform conditions that hold at the boundaries of finite-length cylindrical shells. For the various shells investigated, an optimum winding angle was found for which a maximum frequency response and highest critical buckling load is attainable. Similar optimization was also discovered to be possible by controlling both/either shell heterogeneity and/or fiber orientation.

Nonlinear Forced Vibration Analysis of FG-CNTRC Cylindrical Shells Under Thermal Loading Using a Numerical Strategy

2017 ◽  
Vol 09 (08) ◽  
pp. 1750108 ◽  
Author(s):  
Emad Hasrati ◽  
Reza Ansari ◽  
Jalal Torabi
Keyword(s):  
Frequency Response ◽  
Forced Vibration ◽  
Vibration Analysis ◽  
Cylindrical Shells ◽  
Continuation Method ◽  
Governing Equations ◽  
Nonlinear Forced Vibration ◽  
Forced Vibration Analysis ◽  
Numerical Strategy ◽  
Composite Cylindrical Shells

Employing an efficient numerical strategy, the nonlinear forced vibration analysis of composite cylindrical shells reinforced with single-walled carbon nanotubes (CNTs) is carried out. It is assumed that the distribution of CNTs along the thickness direction of the shell is uniform or functionally graded and the temperature dependency of the material properties is accounted. The governing equations are presented based on the first-order shear deformation theory along with von-Karman nonlinear strain-displacement relations. The vectorized form of energy functional is derived and directly discretized using numerical differential and integral operators. By the use of variational differential quadrature (VDQ) method, discretized nonlinear governing equations are obtained. Then, the time periodic differential operators are applied to perform the discretization procedure in time domain. Finally, the pseudo-arc length continuation method is employed to solve the nonlinear governing equations and trace the frequency response curve of the nanocomposite cylindrical shell. A comparison study is first presented to verify the efficiency and validity of the proposed numerical method. Comprehensive numerical results are then given to investigate the effects of the involved factors on the nonlinear forced vibration characteristics of the structure. The results show that the changes of fundamental vibrational mode shape have considerable effects on the frequency response curves of composite cylindrical shells reinforced with CNTs.

Vibration analysis of thick laminated composite cylindrical shells

AIAA Journal ◽  
2000 ◽  
Vol 38 ◽  
pp. 1102-1107
Author(s):  
K. Y. Lam ◽  
T. Y. Ng ◽  
Wu Qian
Keyword(s):  
Vibration Analysis ◽  
Cylindrical Shells ◽  
Laminated Composite ◽  
Composite Cylindrical Shells
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