%0 Journal Article
%T Vibration analysis of porous metal foam shells rested on an elastic substrate
%A Abbas Rastgoo
%A Ali Dabbagh
%A Farzad Ebrahimi
%J The Journal of Strain Analysis for Engineering Design
%@ 2041-3130
%D 2019
%R 10.1177/0309324719852555
%X In this article, the vibration problem of an embedded cylindrical shell consisted of porous metal foam is solved via an analytical method with respect to the influences of various porosity distributions. Three types of porosity distribution across the thickness are covered, namely, uniform, symmetric, and asymmetric. The strain¨Cdisplacement relations of the shell are assumed to be derived on the basis of the first-order shear deformation shell theory. Then, the achieved relations will be incorporated with the Hamilton¡¯s principle in order to reach the Navier equations of the cylindrical shell. Next, the well-known Galerkin¡¯s method is utilized to calculate the natural frequencies of the system. The influences of both simply supported and clamped boundary conditions are included. In order to show the accuracy of the presented method, the results of the present research are compared with those reported by former published papers. The reported results show that an increase in the porosity coefficient can decrease the frequency of the shell. Also, the stiffness of the system can be lesser decreased while symmetric porosity distribution is chosen
%K Vibration
%K porosity
%K metal foam
%K uniform and non-uniform porosity distributions
%K Galerkin¡¯s method
%U https://journals.sagepub.com/doi/full/10.1177/0309324719852555