Free Vibration Analysis of Laminated Stiffened Cylindrical Panels Using Finite Element Method

Abstract

A study on the free vibration analysis of stiffened laminated composite cylindrical shell is described in this paper. The eight-noded isoparametric degenerated shell element is developed to model both shell panel and stiffeners by using the degenerated solid concept based on Reissner-Mindlin assumptions which taking to account the shear deformation and rotatory effect. Numerical results are presented and comparison is made with the published results from the literature and the good agreement is found. Parametric studies considering different geometrical variables of shell and stiffeners have also been carried out.

Free Vibration Analyses of Stiffened Functionally Graded Graphene-Reinforced Composite Multilayer Cylindrical Panel

“…Tu Tran et al [15] employed FSDT, together with the Galerkin method and Lekhnitsky's smeared stiffener technique, to analyze natural frequencies of stiffened FG circular cylindrical shells supported by a Pasternak elastic foundation for various boundary conditions subjected to a thermal environment. The free vibration analysis of laminated stiffened cylindrical panels based on FSDT and utilizing FEM was surveyed by Tuan, Quoc and Tu, [16]. Nguyen and Hoang [17] analytically presented the free vibration response of a stiffened FG cylindrical shell supported on an elastic foundation based on FSDT, the Galerkin method and the Lekhnitsky smeared stiffener technique.…”