Abstract
Advanced fiber-reinforced laminated plates have been used for structural members in various fields, by virtue of their high specific strength and stiffness. This paper considers, by use of the second variation of the total potential energy, secondary buckling of cross-ply laminated plates with initial deflection under biaxial compression that is simply supported along four edges. The occurrence of secondary buckling is proven analytically, and the effects of various factors, such as initial imperfection, outer lamination angle, number of layers, biaxial compressive load ratio, and postbuckling deflection pattern, are discussed.
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