Ship Springing Analysis for Very Large Container Ship

This paper considers the analysis of ship springing which is based on a hybrid BEM-FEM method to couple the boundary value problems of two distinct domains: fluid and structure. A strong-coupling scheme is applied to solve fluid-structure interaction by using a fixed-point iteration scheme. This study focuses particularly on the observation of computational results for the different beam modeling of ship structure and different structural damping. Even though the same computer code is applied, the computational results can be dependent on the user and the modeling of computational parameters such as grids, beam modeling and external forces. The ship model considered in this study is a very large containership. The computed motion RAO and the load signal time-histories are compared with experimental data, and the agreement and discrepancy are described. This kind of observation may help us to understand the uncertainty level of numerical analysis in ship springing analysis.