Aspects of Design of Double-Layer Tensegrity Domes

Abstract

Double-layer tensegrity domes are formed from double-layer tensegrity grids (DLTGs) with cured surfaces. Typically such domes consist of truncated pyramidal units or their derivatives joined together. Unlike flat DLTGs, the geometric configuration of the dome involves shape finding. The initial, prestressed geometry depends on the constraints governing the construction of the dome. Both shape finding and load analysis involve geometric non-linearities, but the extent of nonlinear behaviour under load, i.e. the magnitude of deflections, depends on a number of factors. While tensegrity structures, like other prestressed cable networks, are often geometrically flexible, geometrically rigid configurations, involving only elastic deformations, are feasible.