720 GA による傾斜機能中空球の材料組成多目的最適化問題 : 気孔率分布の影響

概要

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In this study, we treat multi-objective optimization problem of material composition in a functionally graded hollow sphere that improves strength against thermal stress and heat resistance against thermal load, simultaneously. Firstly, assuming that the hollow sphere is subjected to uniform heat supply, theoretical analyses of one-dimensional heat conduction and thermoelastic problems have been developed. Taking into consideration distribution of porosity in the hollow sphere, material properties of titanium alloy/zirconium oxide type of FGM are estimated by rule of mixture. Next, Pareto optimal solutions of material composition are found by making use of genetic algorithm. Finally, we resistance in a functionally graded hollow sphere, briefly.
社団法人日本機械学会の論文