多目的最適化解析によるテンション構造の最大剛性形態

概要

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Structural shape optimization always adopts structural analysis. For such a reason. the solution of a shape optimization always depends on the loading pattern (loading cases), and it is not so easy to obtain a unique optimum solution for a structure subjected to different loading cases. By weighting function method. the present paper promotes a multicriteria optimization method to maximize the rigidity and minimize the volume (the total volume of all members) of a tension structure subjected to different loading cases. With a purpose of minimizing the nodal displacement vector and the volume, a nonlinear programming method is adopted in the analysis to find the optunum nodal coordinates, member section areas and the distribution of prestresses. A tensegrity frame is taken as a numerical example. and the results show 24. 5% reduction in the volume and that some of the nodal displacements can be reduced 10%, or 30% of their initial values.
社団法人日本建築学会の論文
1996-03-30