Development of a fluid-structure interaction simulator for design of newly developed coastal structures

近年来，由于全球气候变暖，沿海地区发生海啸、涨潮等洪水灾害的风险不断增加，防灾减灾成为重要问题之一。在日本，现有的许多海岸结构设计规范都是基于针对竖向墙体的试验法则，难以直接适用于任意形状的结构。在这种情况下，需要一种新的流固耦合模拟器来改进海岸结构的设计规范。本文研制了一种耦合ISPH和大变形有限元法的FSI仿真器。此外，我们还开发了一个结构动力学的快速有限元求解器。

Recently, risk of flood disasters, such as Tsunami and high tide, in coastal areas have been increasing because of the global warming, and flood disaster prevention and/or -reduction is one of the important issue. In Japan, many of the existing design codes for coastal structure are based on an experimental law aimed at vertical wall, and it is difficult to be directly applied the design code to arbitrary shaped structures. In this context, a new Fluid-Structure Interaction (FSI) simulator is necessary to improve the design code for coastal structures.A FSI simulator by coupling an ISPH and the large deformed FEM is developed in this paper. In addition, we have developed a fast FEM solver for structural dynamics using a reduction method.