To prevent and mitigate tsunami-related disasters on coastal area, a numerical simulation of tsunami-induced forces on structures is of great importance. For a 3-dimensional tsunami run-up and inundation simulation, mesh-free particle methods, such as the smoothed particle hydrodynamics (SPH) method and the moving particle semi-implicit (MPS) method, have been widely used. To improving numerical stability of particle methods, the stabilized incompressible SPH (ISPH) method has been proposed using a relaxing the density invariance condition. Moreover, to improving a parallel efficiency, a combination of a hierarchical bucket-based domain decomposition and a dynamic load balancing for the explicit MPS (E-MPS) method, which adopts a pseudo-compressibility approach, has been proposed. On the other hand, the finite element method (FEM) is a powerful tool for structures. The ADVENTURE system is well-known open source FEM software.

In this research, we consider to develop a partitioned coupling analysis system for fluid-structure interaction (FSI) problems such as tsunami-induced forces on structures. A coupling technique of SPH and FEM has been applied to FSI problems involving free surface flows. Moreover, a coupling technique of E-MPS and FEM has been investigated for the interaction problem between an elastic structure and free surface flows. Mitsume et al. developed a coupling analysis system with in-house coupling code, however, its approach is lack versatility. In here, Yoshimura et al. have developed a general-purpose coupling analysis platform, named REVOCAP_Coupler, which couples a FEM code and another one. Therefore, we attempt to use the REVOCAP_Coupler for coupling of an in-house SPH code and a FEM code. We adopt the ADVENTURE_Solid as a elasto-plastic FEM software. Using a developed system, we demonstrated some numerical examples of FSI problems.