Abstract
This paper discusses the large deflection bending behavior or plates subjected to bending moments along two opposite edges and free on the other two opposite edges. Isotropic and laminated fiber-reinforced composite plates with small initial curvatures are discussed. It is shown that when the applied moments become large, the classical anticlastic saddle shape disappears and the plate flattens laterally to become more cylindrical in nature. This phenomenon is due to nonlinear geometric effects. The theory governing plate behavior and numerical studies illustrating the sensitivity of the plate's flattening response to anisotropy and initial imperfections are presented. Then an experimental apparatus designed to load plates is briefly described. Experimental results are compared with theoretical predictions for a [(± 45)3]g graphite-epoxy plate, a [902/02/± 45]g, graphite-epoxy plate, and an aluminum plate. Comparison between experiment and theory is shown to be good. Several aspects of the comparison are discussed.
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