engleski

Numerical Model for Fluid-Structure Coupled Problems under Seismic Load

The paper briefly presents the numerical model for solving the fluid-structure coupled systems problems which is based on a separate solution for each field. Individual fields (fluid and structure) are solved independently, considering the interaction information transfer between them at every stage of the iterative solution process. The applied model is primary intended for the simulation of water – concrete structure dynamic interaction in seismic conditions. It includes the most important nonlinear effects in water and structure, such as concrete yielding in compression and crack opening/closing in tension, reinforcement yielding and phenomena of cavitation in water. Finally, a numerical example of arch dam Grančarevo under registered earthquake is presented to show the efficiency and the accuracy of the developed algorithm.

numerical model; fluid-structure dynamic interaction

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