Research on Design Methods of Deepwater Floating Systems in Ocean Engineering
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Abstract
Deepwater floating systems are mainly composed of floating hull, mooring system and riser system. The design analysis of floating platform and mooring/riser is very important for normal operation and running safely. For the design of floating platform, the hydrodynamic analysis is usually performed in frequency domain, and then the hydrodynamic loads are transferred to the finite element model to execute structural FE analysis. The design of the platform can be performed by combining the hydrodynamic analysis results and finite element analysis results with national standards. In addition, effective coupled analysis of the floating system in time domain must be executed due to the nonlinearity and dynamic properties. The results of global response can be used for the initial design of platform and mooring/riser system, and also can be used in the detailed design with the results as the dynamic boundary conditions of mooring/riser. According to these two design ideas, this paper gives a brief introduction of analysis flow, special problems and solution methods, and then introduce the steps of analysis of platform and mooring/riser by combining application of software.
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