EFFECT OF ADDED MASS ON SUBMERGED VIBRATED PLATES

Vibration of solid-fluid interaction systems requires a deterministic knowledge of vibration analysis and structures coupling. It is evident that a structure vibrating in a fluid has to support an interactive inertial effect caused by the fluid which changes the dynamic behavior of the solid itself. This paper presents an experimental study on the effect of added mass on submerged plate structures which are subjected to vibration. Different plates vibrating in water at different depths with various geometry ratios are studied using a number of boundary conditions. Dynamic testing is conducted in time domains to identify the modal parameters of the structures. The modal added mass value and added mass coefficient are then derived from the change of modal frequencies from air to water. This is followed by a comparison of experimental results with several numerical analyses found in the literature. 1