2202 積層複合材料構造物の信頼性に基づく最適化に関する研究

概要

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This study is concerned with reliability-based optimization of a frame structure composed of thin laminated composite pipes. The volume is minimized in terms of ply thinckness, and radius of composite pipe subject to mode reliability constraints. The reliability is evaluated by modeling the structure as a series system consisting of each ply failure based on Tsai-Wu criterion. The mode reliability is obtained by the first order reliability mothod, where material properties and applied loads are treated as random variables. through numerical calculations, the effect of variations of the random variables is discussed. Then, it is demonstrated that reliability is an important measure for structural safety by comparing the rerilability-based design with deterministic optimum design.
社団法人日本機械学会の論文
2001-01-16