設計者の選好と力学的合理性を勘案した自由曲面シェル構造の構造形態創生法の開発 : 設計事例による考察

概要

論文の詳細を見る
The scheme of computational morphogenesis for the shell structures with free curved surface is proposed, where the requirement on both the aesthetic aspect and the structural rationality can be simultaneously satisfied according to the judgment of the designer. In the proposed scheme, Non Uniform Rational B-Spline (NURBS) is utilized by which the number of unknowns can be controlled while the high degree of freedom for expression of the shape of the curved surface is maintained. For the scale index concerning with the aesthetic aspect, the degree of geometrical difference between the curved surfaces given by the designers and those given by computation has been adopted and, on the other hand, the strain energy of the structures has been adopted as the quantitative scale for the mechanical measurement. Consequently, the problem in question has been mathematically formulated as the multi-objective optimization problem, where the multi-objective genetic algorithms and the optimality condition are utilized for obtaining the Pareto solutions and numerical examples are presented where the effectiveness of the proposed scheme is investigated through the application to several shell structures actually planned.
一般社団法人日本建築学会の論文
2008-03-25