大型望遠鏡を支持するトラス構造物の多目的最適設計

概要

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Recently, the construction of the large astronomical telescope has been planned for better astronomical observation. In this project, It Is neoeasary to make the structure of the telescope light economically as well as constructively. And homogeneous deformation of the supporting structure of the telescope Is desirable to realize the supporting system of the main system of the telesoopa However It Is not so easy to design such structure, because the various tilt angle caused by the rotation of telescope hr astronomical observation result In the large amount of the change In the external load. In this paper, the scheme of multi-objective optimal design hr trues structures supporting large telescope are proposed. The requirement of both weight ndnhnhatlon and homologous deformation are simultaneously satisfied by using SPEA2 as multi-objective optimal method, where standard deviation of nodal displacements Is adopted to evaluate homologous deformation. Numerical examples which show mechanical property of pareto optimal solutions are Illustrated.
一般社団法人日本建築学会の論文
2009-03-27