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Postbuckling Response of Doubly-Curved Shallow Panels Under Complex Loading Conditions

by L. Librescu, Virginia Polytechnic Inst and State, Univ, Blacksburg, United States,
M. Y. Chang, Virginia Polytechnic Inst and State, Univ, Blacksburg, United States,



Document Type: Proceeding Paper

Part of: Engineering, Construction, and Operations in Space IV

Abstract:

The static postbuckling of laminated doubly-curved shallow panels subjected to the complex action of a system of in-plane compressive edge loads and a transverse pressure field is investigated. The influence played by a number of effects as e.g., transverse shear deformation, lamination scheme, character of in-plane boundary conditions, transverse normal stress components are discussed and a series of pertinent conclusions are outlined. Comparisons of the obtained results with their classical counterparts are performed and conclusions related to their range of applicability are outlined. Moreover, by incorporating the initial geometric imperfections, their influence on the load carrying capacity of curved composite panels is discussed and the peculiarities of their effect as compared to the case of flat panels are emphasized. The few numerical results contained in the attached plots emphasize the influence of a number of effects introduced in the structural model.

Subject Headings: Load factors | Shear deformation | Laminated materials | Structural analysis | Shear stress | Post buckling | Panels (structural)

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