Dynamic Characteristic Of Deepwater Mooring Line

Mooring line dynamic response analysis is one of the key technologies in deep-water platform development,. In this paper, lumped-mass method is used to research the subject in deep water wave and current loads, submarine shapes, mooring line layout and other factors under the influence of the dynamic analysis of the mooring Line. This paper carried out the following aspects:Firstly,it is derived in considering the flow, seabed under the action of friction, the application catenary equation may be stretching mooring lines in static analysis, through a mooring line on the same circumstances in different water depth static analysis, to discuss the seabed the impact of friction on the mooring Line.Secondly, through lumped-mass model, mechanical analysis of the nodes, taking into account the current strength, wave power, additional external forces, submarine and other factors to establish anchor chain line equation of motion control .Thirdly, through the single-frequency excitation force analysis method, it is studied the effect between number of elements and tension of the top node. Based on the actual project to analyze the seabed shape.Fourthly,the unfloding process of mooring systems and the dynamic response analysis.