Enhanced finite element modeling for geometric non-linear analysis of cable-supported structures

Abstract

Enhanced three-dimensional finite elements for geometrically nonlinear analysis of cable-supported structures are presented. The cable element, derived by using the concept of all equivalent modulus of elasticity and assuming the deflection Curve of a cable as catenary function, is proposed to model the cables. The stability functions for a frame member are modified to obtain a numerically stable solution. Various numerical examples are solved to illustrate the versatility and efficiency of the proposed finite element model. It is shown that the finite elements proposed ill this Study call be very useful for geometrically nonlinear analysis as well as free vibration analysis of three-dimensional cable-supported structures.