DOI: 10.5176/2301-394X_ACE15.23
Authors: Zbigniew Bieniek
Abstract:
The relationship between forms and forces is one of the main topics o structural morphology. This harmonious coexisting relationship is very strong for systems in tensegrity state, commonly called tensegrity systems. It is currently apparent that among the tensegrity systems also exist cable-bar cells with a discontinuous network of cables. It is possible to design a separate set of cables inside the cable-bar elementary cell and to establish a self-stress state of equilibrium. In this connection, the author of paper suggested to assume a new Class Theta tensegrity systems. Each of the basic tensegrity systems termed Class Theta possesses an external and internal set of tension components. The shape of Greek capital letter Θ (Theta) reflects two sets of such components (two sets of tendons, cables etc.). This notation corresponds to Skelton’s Class k tensegrity structure. As shown in this paper, the Class Theta tensegrity cell can exemplify a geometrically and practically useful form for the lightweight and long-span modular structures; mainly but not only in view of civil engineering and architecture.
Keywords: bar; cable; geometry; grid; module; prism; tetrahedron; tensegrity
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