%0 Conference Proceedings %T An innovative tool to study and optimize racing yacht appendages using fluid structure interactions %+ Institut de Recherche Dupuy de Lôme (IRDL) %+ HDS (HDS) %A Balze, Rémy %A Bigi, Nedeleg %A Roncin, Kostia %A Leroux, Jean-Baptiste %A Nême, Alain %A Keryvin, Vincent %A Connan, Antoine %A Devaux, Hervé %A Gléhen, Denis %< avec comité de lecture %( VII International Conference on Computational Methods in Marine Engineering %B VII International Conference on Computational Methods in Marine Engineering %C Nantes, France %3 Proceedings of the VII International Conference on Computational Methods in Marine Engineering, Marine 2017 %P 616-624 %8 2017-05-15 %D 2017 %K Finite element model %K Racing boats %K Multihull %K Appendage %K Foil %K Rudder %K Fluid-structure interactions %K FSI %K Optimization %K 3D lifting line %K Composite beam %Z Physics [physics] %Z Physics [physics]/Mechanics [physics]Conference papers %X GSEA Design developed a fluid structure method (FSI) suitable for early design stage of appendage with complex shapes dedicated to the America's Cup flying catamarans. The aerodynamic loading and the boat weight are counteracted by the appendages and mainly the dagger-board. Consequently, the appendage structural design is very critical. Based on a 3D lifting line and a modified beam element method, the GSEA Design FSI method takes less than one minute to compute. An illustrating example on a L-shape appendage shows that the FSI results compared to a non-FSI results can be particularly different at the elbow. Thanks to the short computational time of the method, multi-objective optimizations can be performed. For instance, a second illustrating example shows the optimization of the appendage weight and stiffness. %G English %2 https://ensta-bretagne.hal.science/hal-01710686/document %2 https://ensta-bretagne.hal.science/hal-01710686/file/An_innovative_tool.pdf %L hal-01710686 %U https://ensta-bretagne.hal.science/hal-01710686 %~ UNIV-BREST %~ ENSTA-BRETAGNE %~ CNRS %~ UNIV-UBS %~ UBS %~ ENIB %~ IRDL %~ IRDL_UBS %~ ENSTA-BRETAGNE-MECA %~ ENSTA-BRETAGNE-PTR3-IRDL