Fluid structure interaction of a vibrating circular plate in a bounded fluid volume: simulation and experiment

摘要

The eigenfrequencies and damping of a vibrating circular plate resting in a finite fluid domain are studied. A plate which is clamped at the center and free along the edge is excited by a coil and the vibrations are measured with a laser scanning vibrometer. A 3D model of the plate is built up in ANSYS, using the experimental data as verification. The focus of this work is to investigate the influence of boundaries like a wall or a free water surface on the eigenfrequency of the plate. Also the damping of the circular plate for different water levels is measured.