積層パラメータの離散誤差最小化による複合材積層板の座屈特性最適化

概要

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The fiber reinforced plastics (FRP) have been utilized in various structural applications of automobile and aerospace industries because they have excellent features of high specific strength and stiffness ratios. The FRP composites are fabricated typically by stacking orthotropic layers, each of which is composed of reinforcing fibers and matrix materials. In this work, an optimum design approach is proposed to optimize buckling performance of laminated composite plates by using the lamination parameters. The approach consists of two parts: the first part is to optimize the lamination parameters by a gradient method, and the second part is to obtain the optimum layup design for the maximum buckling loads by minimizing the errors between the opimum parameters and the parameters for all possible discrete lay-up designs. Th feedback concept is considered to ensure the global solutions. It is shown in numerical examples that the proposed approach is quite effective in determining the lay-up design for the best buckling performance.
一般社団法人日本機械学会の論文
2006-08-25