The techniques for hydrodynamic load transfer from combined action of waves (seakeeping) and internal liquid flow (sloshing), onto 3DFEM structural model are discussed. The problem is relevant both for a ship transporting liquids in tanks (LNG carriers, tankers...) as well as for any ship sailing in ballast conditions. Correct pressure transfer to the FEM model is essential for spectral fatigue assessment of structural details. The methods that are used in practice do not appear to be very clear and different levels of approximations based on some empirical considerations are usually employed. In this paper, a fully consistent method is proposed in the context of the linear frequency domain model.
Volume Subject Area:
C.C. Mei Symposium on Wave Mechanics and Hydrodynamics
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