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Identification of Damping Parameters for Laminated Shallow Cylindrical Shells

An inverse analysis method has already been proposed by the authors to identify damping parameters of laminated composite materials using the FEM eigenvalue analysis. The purpose of this study is to apply the proposed method to a laminated shallow cylindrical shell. First, by applying the experimental modal analysis technique to the laminated shallow cylindrical shell with free boundary conditions, natural frequencies, mode shapes, and modal damping ratios are obtained. Next, by considering those obtained for the laminated shallow cylindrical shell, damping parameters for the lamina of the shell are identified