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Finite element buckling and postbuckling solutions for multilayered composite panels. (English) Zbl 0801.73072

A study is made of the buckling and postbuckling responses of flat, unstiffened composite panels subjected to various combinations of mechanical and thermal loads. The analysis is based on a first-order shear deformation von Kármán-type plate theory. A mixed formulation is used with the fundamental unknowns consisting of the strain components, stress resultants and the generalized displacements of the plate. The stability boundary, postbuckling response and the sensitivity coefficients are evaluated. Numerical results are presented for both solid panels and panels with central circular cutouts.

MSC:

74S05 Finite element methods applied to problems in solid mechanics
74G60 Bifurcation and buckling
74E30 Composite and mixture properties
74K20 Plates
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