単純支持された対称積層板の座屈荷重に対する信頼性解析

概要

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This study is concerned with the structural reliability analysis of a symmetric laminated plate subject to buckling load. The material constants and the orientation angle of each layer as well as applied loads are treated as independent random variables. Since the buckling load is obtained as a minimum eigenvalue through Galerkin's method, buckling failure can be modeled as a series system consisting of eigen modes. When a design point obtained by FORM corresponds to the reversed laminated sequence is also considered as the design point. The failure probability bounds of this series system are determined by Ditlevsen's bounds. Compared with the reliability obtained from Monte Carlo simulation, the reliability obtained from FORM is shown to be useful for evaluating the reliability of designs qualitatively. Then, a reliablity-maximized design is compared to a buckling-load-maximized design.
一般社団法人日本機械学会の論文
1997-01-25