This paper introduces the development of a practical procedure and its component elements for the analysis of hull structural hydroelasticity in seaways and the corresponding fatigue assessment. The procedure is an integration of ship motion, structural vibration, stress, and fatigue analyses. For the ship motion and structural vibration analyses, a fully coupled hydroelastic approach is adopted in time domain. The approach is composed of a 3-D Rankine panel method, a 2-D generalized Wagner model, and a 1-D or 3-D finite element method. Then, springing and slamming-whipping are considered in the analysis, and computational results are systematically validated by comparing with experimental results. As a result, a set of high-fidelity procedures for hydroelastic response and fatigue analyses of ship structure is introduced. Finally, the proposed procedures are applied to an ultra large containership.

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