Abstract
An analytical method is proposed by using the large-deflection theory to determine the axial dynamic buckling strength of stiffened panels with simply supported edges and isotropic linear-elastic materials. The buckling behavior of the attached plates and stiffener are separately expressed by various displacement functions. These displacement functions are expressed by trigonometric and hyperbolic series, which satisfy the boundary conditions and the motion governing equations for the stiffened panels. The method is validated by comparing its predictions with finite element results for a typical stiffened plate. Then, the influence of several critical parameters, including initial imperfection, impact load, and stiffener torsional rigidity, on the dynamic deflection and critical buckling load are studied. The results reveal that the local web behavior has a significant influence on the dynamic buckling behavior of stiffened panel.
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