Finite element study of the free vibration of 3-D cable networks

Abstract This paper briefly describes a finite element model previously developed for studying the free vibration characteristics of a single sagged cable hanging freely from two supports. This element, which allows elastic deformations, is used to determine the natural frequencies and normal modes of vibration of 3-D cable networks. A parametric study is made to predict the influence of various parameters, such as rise/span ratio of cables, initial pretension, cable rigidity, linear dimensions and surface curvature, on the natural frequencies and normal modes of vibration of 3-D cable nets. The results for various configurations are presented in the form of non-dimensional plots.