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1
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Vibration analysis of FG cylindrical shells with power-law index using discrete singular convolution technique

100%
Mercan K., Demir Ç., Civalek Ö.
Curved and Layered Structures
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2016
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tom 3
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nr 1
EN
In the present manuscript, free vibration response of circular cylindrical shells with functionally graded material (FGM) is investigated. The method of discrete singular convolution (DSC) is used for numerical solution of the related governing equation of motion of FGM cylindrical shell. The constitutive relations are based on the Love’s first approximation shell theory. The material properties are graded in the thickness direction according to a volume fraction power law indexes. Frequency values are calculated for different types of boundary conditions, material and geometric parameters. In general, close agreement between the obtained results and those of other researchers has been found.
2
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Free vibrations of non-uniform CNT/fiber/polymer nanocomposite beams

88%
Seidi J., Kamarian S.
Curved and Layered Structures
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2017
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tom 4
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nr 1
21-30
EN
In this paper, free vibrations of non-uniform multi-scale nanocomposite beams reinforced by carbon nanotubes (CNTs) are studied. Mori-Tanaka (MT) technique is employed to estimate the effective mechanical properties of three-phase CNT/fiber/polymer composite (CNTFPC) beam. In order to obtain the natural frequencies of structure, the governing equation is solved by means of Generalized Differential Quadrature (GDQ) approach. The accuracy and efficiency of the applied methods are studied and compared with some experimental data reported in previous published works. The influences of volume fraction and agglomeration of nanotubes, volume fraction of long fibers, and different laminate lay-ups on the natural frequency response of structure are examined.
3
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Free vibrations and buckling analysis of laminated plates by oscillatory radial basis functions

88%
Neves A. M. A., Ferreira A. J. M.
Curved and Layered Structures
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2016
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tom 3
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nr 1
EN
In this paper the free vibrations and buckling analysis of laminated plates is performed using a global meshless method. A refined version of Kant’s theorie which accounts for transverse normal stress and through-the-thickness deformation is used. The innovation is the use of oscillatory radial basis functions. Numerical examples are performed and results are presented and compared to available references. Such functions proved to be an alternative to the tradicional nonoscillatory radial basis functions.
4
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Free vibration behavior of laminated composite stiffened elliptic parabolic shell panel with cutout

75%
Sahoo S.
Curved and Layered Structures
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2015
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tom 2
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nr 1
EN
In this paper free vibration behavior of laminated composite stiffened elliptic parabolic shell has been analyzed in terms of natural frequency and mode shape. Finite element method has been applied using an eight-noded curved quadratic isoparametric element for shell with a three noded curved beam element for stiffener. Cross and angle ply shells with different edge conditions have been studied varying the size and position of the cutouts to arrive at a set of inferences of practical engineering significances.
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