Optimized design of equivalent truncated mooring system based on similarity of static and damping characteristics

Considering the gravity, tension, current force and mooring line extension, the piecewise extrapolating method is employed to the static analysis of the multi-component mooring line. In addition, the quasistatic approach is used to figure out the mooring-induced damping of mooring system. Employing genetic algorithm, an optimized design program is developed based on the similarity of both static and damping characteristics for hybrid model test. Considering the catenary mooring system used for some semi-submersible platform of 1500m water depths, the equivalent truncated mooring system is designed, which can provide references for the follow processes in hybrid model test. Copyright © 2012 by the International Society of Offshore and Polar Engineers (ISOPE).