Equivalent beam finite element to model the mechanical behavior of composite hydrofoils
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In high performances racing yacht design, hydrofoils are becoming more and more common. To study their performances, Fluid-structure interactions (FSI) are realized. Theses simulations are mandatory to study high performances hydrofoils because their significant deformations have an impact on the hydrodynamic flow around the foil that can’t be neglected. To realize FSI simulations, a method has to be defined to solve the flow around the foil and its mechanical response. To compute the flow around the foil, an inviscid flow solver based on the boundary element method (BEM) is considered, this solver takes into account the nonlinear free-surface effect on the hydrodynamic forces acting on the foil. The structural part of the simulations is solved with the finite element method, as implemented in Abaqus 2022. Two type of modelisation are considered in Abaqus, a first one where the foil is descrided with 2D shell and 3D solid finite elements and a second one where the foil is modeled with 1D beam elements equivalent to the 2D/3D model.
