Structure-material relations in the buckling problem of asymmetric composite columns

The paper examines the effects of material composition and properties on th e non-linear buckling response of asymmetric laminated structures. The prob lem is studied through the analysis of asymmetric laminated columns compose d of an arbitrary number of different material layers. The non-linear buckl ing behavior of the columns subjected to combined compression and bending i s examined depending on parameters such as the number, orientation and stac king sequence of the layers that make up the laminate. The analysis demonst rates that, under certain conditions; asymmetric laminated columns subjecte d to combined compression and bending exhibit bifurcation. In such cases, t he onset of lateral deformations of the columns is delayed until the applie d moment-force system attains its critical value. Based on the analytical s olution of the non-linear buckling problem under consideration, the potenti als for maximizing the critical load and controlling the buckling character istics of laminated composites through tailoring their material properties are analyzed. (C) 1999 Elsevier Science Ltd. All rights reserved.