ABSTRACT
A new numerical coupling model between Smoothed Particle Hydrodynamics (SPH) and Structural Finite Element Method is proposed to evaluate the Fluid-Structure Interaction (FSI) behavior. This chapter introduces the SPH theory and discusses the coupling algorithm. According to the coupling algorithm, the FSI model can be divided into two categories; simultaneous model and partitioned model. A numerical model coupling SPH and structure model with nonlinear beam element is proposed in to predict the occurrence of structural ringing under green water. During the coupling process, the coordinates and velocity of boundary particles will be calculated based on the interpolation/extrapolation results of displacement and velocity of mesh surface center of structure model. Benefiting from the partitioned coupling algorithm, the proposed model is relatively easier to be updated whenever the new SPH model or Abaqus version is released. In SPH model, the fluid and structure are built by the fluid particles and boundary particles relatively.
