Effectiveness of Damping Tiles for Reducing Vibration of Plates in Water

摘要

The effectiveness of damping tiles in reducing the vibration response of a point-excited, clamped-edge plate immersed in water was investigated in a combined theoretical and experimental program. Comparisons of measured acceleration spectra for damped and undamped plates in both air and water environments indicate that damping tiles are less effective in a water environment than in air. A theoretical solution, based on thin-plate theory, of the acceleration power spectral density of a simply supported, fluid-loaded plate is derived and utilized to interpret the experimental results. From the theoretical solution, an approximate theory for plate acceleration in the vicinity of resonance is developed to quantitatively evaluate the effectiveness of damping tiles in a water environment. (Author)