年間 4 号発行
ISSN 印刷: 2152-2057
ISSN オンライン: 2152-2073
Indexed in
SIMPLIFIED BUCKLING ANALYSIS OF STIFFENED LAMINATED SANDWICH PLATES
要約
Buckling analysis of laminated sandwich plates reinforced with miltiblade stiffeners is described in this work. An approximate, semianalytical model for such plates subjected to uniaxial and biaxial compression loading is derived, considering the interaction of sandwich plate, longitudinal and transverse stiffeners. The semianalytical method is based on the Rayleigh–Ritz formulation. The stiffeners were added at the upper and lower faceplates and modeled as a simple beam with flexural and torsional stiffness against out-of-plane bending. The faceplates are demonstrated as sheardeformable plates utilizing the first-order shear deformation plate theory. The core of the sandwich panel is considered as a three-dimensional body. Several methods for evaluating the shear correction factor were presented in this study. The results of the presented model were found to be in good agreement with fully nonlinear finite element analysis results and the results available from the literature. The presented model allows for a very efficient analysis in terms of computational time and required memory compared to a fully nonlinear finite element analysis model. Various applications have been depicted, with the aim of elucidating the capability and versatility of the exhibited approach.