Abstract
A static analytical method for unstable cable structures has previously presented by the authors, combining two C20level control method with the load control method, that is, modified two level control method. For such moored floating body anchored by the cables with large deformation, this method can be extended to some large kinematic equation on the basis of the principle of D'Alembert. This paper shows that a dynamic solution of the unstable cable structures can be solved by taking the inertia force into consideration of the modified two level control method above and using the central time difference method. As a numerical example, 6-member cable structure, is analyzed the process of large deformation, giving the forced displacements on the top of the cable.