FORM-FINDING PROBLEM USING BEAM ELEMENTS OF FINITE ELEMENT TECHNIQUE ASSUMING NODAL COORDINATES: HYBRID TENSILE STRUCTURES WITH ACTIVE BENDNG BEAM, MEMBRANE, CABLE ELEMENTS

Abstract

The finite element technology assuming nodal coordinate is one of a useful method for form-finding of tensile structures, which does not require coordinates transformation and is described by a simple formulation. Furthermore, bending-active structures is known as a form-finding problem for hybrid tensile structures. It is possible to realize lightweight structures with self-equilibrium by the prestressing tension of the membrane and cables or the temporary external force during construction. In this paper, we drive the formulation of beam elements with the finite element technique assuming coordinate values, and apply the method to hybrid bending-active structures.