2 0 0 0 OA 拡張ESO法による構造形態の創生 : 多目的適応型構造とシェル構造への適用
- 著者
- 大森 博司 崔 昌禹
- 出版者
- 日本建築学会
- 雑誌
- 日本建築学会構造系論文集 (ISSN:13404202)
- 巻号頁・発行日
- vol.67, no.552, pp.109-116, 2002-02-28 (Released:2017-02-04)
- 参考文献数
- 18
- 被引用文献数
- 2 5
Evolutionary Structural Optimization (ESO) method is one of the most powerful and promising technique for pursuing the optimal structural form among the other methods as the homogenization design technique and the bubble method. Although it is easy to carry out the calculation of ESO, there have been remained some weak points in its evolutionary process, by which inefficiency of calculation is caused or unreasonable solutions are concluded. A new method through the usage of the contour lines is proposed in order to remove such defects of the usual ESO as well as to enable the structures to not only be scraped off but also grow up toward the final optimal structures. Numerical examples on the structural form creation for plane structures subjected to multiple loadings as well as shell structures are demonstrated so as to show the potential ability of the present method toward effective structural design tools.
2 0 0 0 OA ホモロガス変形を考慮したトラス構造物の構造形態創生に関する研究
- 著者
- 薫田 匡史 栗田 光樹夫 大森 博司
- 出版者
- 日本建築学会
- 雑誌
- 日本建築学会構造系論文集 (ISSN:13404202)
- 巻号頁・発行日
- vol.77, no.676, pp.899-904, 2012-06-30 (Released:2012-07-27)
- 参考文献数
- 9
Recently, the construction of the large astronomical telescope has been planned for better astronomical observation. In this project, it is necessary to design the structure of the telescope economically as well as easy to construct. Additionally homogeneous deformation of the supporting structure of the telescope is desirable to realize the stable supporting system of the main system of the telescope. However it is not so easy to design such structure, because the various tilt angle caused by the rotation of telescope for astronomical observation result in the large amount of the change in the external load. In this paper, the scheme of multi-objective optimal design for truss structures supporting large telescope are proposed and demonstrated in an actually constructed 3.8 m telescope. Using SPEA2 as multi-objective optimal method, where standard deviation of nodal displacements is adopted to evaluate homologous deformation, simultaneously satisfies the requirement of both weight minimization and homologous deformation.
1 0 0 0 OA 多目的最適化法による鋼構造物の構造設計支援手法の提案
- 著者
- 田村 尚土 大森 博司
- 出版者
- 日本建築学会
- 雑誌
- 日本建築学会構造系論文集 (ISSN:13404202)
- 巻号頁・発行日
- vol.73, no.628, pp.891-897, 2008-06-30 (Released:2009-09-30)
- 参考文献数
- 9
- 被引用文献数
- 2 5
Present paper proposes a supporting system for structural design of steel frame structures by using multi-objective genetic algorithm. Most of steel structures are composed of the standardized members produced at the factory. In order to take such situation into the process of structural optimization, the structural optimization scheme through the usage of genetic algorithm which can easily deal with discrete variables is presented. Furthermore, multi-objective optimal design method to obtain the Pareto solutions considering both structure's safety and its economy by using multi-objective genetic algorithm is proposed. Through the numerical examples, present design system is shown to be useful for designers as a valuable proposal tool especially in the beginning stage of the structural design.
- 著者
- 金子 侑樹 平田 裕一 古川 忠稔 大森 博司
- 出版者
- 一般社団法人日本建築学会
- 雑誌
- 学術講演梗概集 (ISSN:18839363)
- 巻号頁・発行日
- vol.2014, pp.407-408, 2014-09-12