Numerical Modelling for Synthetic Fibre Mooring Lines Taking Elongation and Contraction into Account

Synthetic fibre mooring lines are used as an alternative to traditional steel wire ropes due their higher strength weight ratio. Benefits also found in relative ease of handling, and therefore the marine industry has largely accepted this type line. By rules regulations, design should be based on a coupled dynamic analysis particular system moored vessel. This approach incorporates damping inertial forces (i.e., hydrodynamic reactions) acting directly motion through seawater. On basis outer diameter synthetic rope, Morison equation gives estimations line reactions. In comparison ropes, usually have relatively larger elongations consequently reductions diameter. Furthermore, lower certainly leads reduced values added mass (of lines) that considered model. Therefore, aim study was develop new numerical model includes changes axial deformations when estimating The development is carried out with nonlinear finite element method for assumption large three-dimensional motions. obtained results show effectiveness newly developed more accurate calculation