Finite element buckling and postbuckling solutions for multilayered composite panels

摘要: Abstract A study is made of the buckling and postbuckling responses flat, unstiffened composite panels subjected to various combinations mechanical thermal loads. The analysis based on a first-order shear deformation von Karman-type plate theory. mixed formulation used with fundamental unknowns consisting strain components, stress resultants generalized displacements plate. stability boundary, response sensitivity coefficients are evaluated. measure variations in different lamination material parameters panel. Numerical results presented for both solid central circular cutouts. show effects fiber orientation angles, aspect ratio panel, hole diameter (for cutouts) coefficients.