Dynamic analysis of a watersoilpore water coupling system
This paper explores the possible integration of the dynamic analyses of interaction of pore fluid flow and porous structure. The generalized fluidstructure interaction (FSI) algorithm in ADINA is applied for seismic analysis of a reservoirearth damfoundation system. In the given numerical example, water in the reservoir interacts with the earth dam on the upstream slope of the dam, and the foundation at the reservoir bottom. Pore water couples with soil particles throughout the earth dam and foundation. The reservoir water is modeled using both the NavierStokes equation based fluid element and the subsonic potential based fluid element. In the coupled analysis, hydrodynamic pressures and velocities are presented in the reservoir zone, while displacements, pore pressures and stresses are given for the earth dam and foundation domains at any earthquake time. The generalized FSI model is of great significance in performing soil liquefaction analysis if an appropriate soil plasticity model is employed in accounting for cyclic behavior of soils.
dynamic analysis coupling finite element method porous media model reservoir/dam/foundation system elasto-plasticity