This paper describes the finite element solution of the viscoelastic tension structures of a quite arbitrary geometrical form, of the plan projection and nodal loading suspended on rigid, elastically and viscoelastically yielding supports. The nonlinear rheological factors which influence response of the prestressed cable structures are analyzed. The expressions, for the actual values of moduli of elasticity and lengths of materially and geometrically nonlinear steel cables as the functions of stress, strain and time considering the nonlinear creep theory and various types of the approximation functions of the stress-strain diagrams of a new, partially stretched and stretched cable are derived. The results of the creep tests of the steel spiral single-strand cables under constant load are presented. The special types of the tangential stiffness matrices as the functions of time and stress, of cable element for polylinear or linear, quadratic and cubic approximation of its stress-strain diagram are obtained and some numerical application are presented in this paper.

purchase the full-text of this paper (price £20)

go to the previous paper
go to the next paper
return to the table of contents
return to the book description
purchase this book (price £60 +P&P)