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This paper presents a comparative numerical analysis of single-layer steel geodesic domes with a diameter of 30 m based on a regular icosahedron and a regular octahedron. Division frequencies 2 V, 4 V, 8 V, and 16 V were analysed using a Class I grid. The study assumes that increasing the subdivision frequency improves structural performance and that the choice of the base solid affects material efficiency. The results show that higher frequencies reduce bending moments and shift the structural behaviour towards axial forces, which allows smaller cross-sections and lower mass. At 16 V, the icosahedral dome was about 20% lighter than the octahedral one. Domes based on the icosahedron also required fewer unique member lengths and achieved better geometric efficiency.
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- Anna Stefańska, Klaudia Liszewska, Małgorzata Kurcjusz, Katarzyna Jeleniewicz, Rohan Raj Das, GENERATIVE SHAPING IN SEARCH OF MATERIAL AND STRUCTURAL OPTIMISATION OF SMALL STRUCTURAL FORMS , Acta Scientiarum Polonorum. Architectura: Vol. 22 (2023)
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