Topology Optimization of Single Layer Geodesic Domes by A Metaheuristic Algorithm

Domes provide a completely unobstructed inner space and economy in terms of materials in the case that the goal is to cover wide spans. They are lighter compared with the more conventional forms of structures. Among different forms, one of the most well-known ones is geodesic dome [1]. Once diameter of a geodesic dome is specified, its geometry can be defined by the total number of rings and height of crown. Therefore, in the optimization process, these three parameters besides the cross-sectional areas of structural members must be considered as design variables. In this study, particle swarm optimization (PSO) is employed for topological optimization of geodesic domes by taking into account the geometrically nonlinear response of the domes. The serviceability and strength requirements are considered as specified in LRFD-AISC [2]. To perform structural analysis considering geometrical nonlinearity, ANSYS is employed.

کلیدواژه ها:

single layer dome ، geodesic dome ، topology optimization ، metaheuristic