부산대학교 도서관

Lightweight, deployable, and reusable structures attracted increasing attention over the years in terms of construction sustainability. In this research area, tensegrity and origami-inspired structures were extensively investigated for different applications. This contribution focuses on the design of two-dimensional geometric patterns of vertices, edges, and faces that can be used for both tensegrity and origami structures, which are here analyzed in connection to each other. The design methodology is based on a semi-analytical form-finding procedure in which two set of equations are simultaneously solved: the rank-deficiency conditions on the equilibrium operator for the tensegrity structure and the developability conditions for the corresponding origami. In addition, the relation between geometry and selfstress of the obtained structures is analyzed by parametric simulations. A 3D modeling workspace - combining GrasshopperTM and MatlabTM codes - supports the design phases from the study of the geometric pattern, satisfying the rank-deficiency and the developability conditions, to the evaluation of the selfstressed tensegrity configuration. The case of a Snelson tensegrity tower functioning as a lightweight, deployable, and reusable pavilion is considered to demonstrate the proposed methodology for the design of tensegrity-origami structures.