Dynamic Buckling Analysis of Composite Cylindrical Panels using a Finite Element Integrated Fast Tool

The dynamic buckling behavior of composite cylindrical panels is studied using a Finite Element integrated fast tool based on a perturbation approach. An extension of initial postbuckling analysis has been used in earlier work to assess the postbuckling characteristics of structures under dynamic loading using a reduced order model. The modes used in the reduced order dynamic response analysis correspond to static buckling modes. For curved panels, the dynamic response behavior may not be represented sufficiently well by the buckling modes obtained from a static buckling analysis based on a linear prebuckling state. In this paper it is shown for a specific composite panel, that by including the effect of prebuckling nonlinearity when calculating the static buckling modes, the current reduced order model approach is capable of representing the dynamic response behavior of this composite panel reasonably well.