Wave Propagation in Plate Covered by Periodic Damping Structures

摘要

The wave propagation in plate covered by periodic damping layers is analyzed and controlled. A theoretical model is developed to describe the wave propagation characteristics and the vibrations of a plate covered by periodic damping structures with simply supported boundary condition along its longitudinal edges. The wave propagation characteristics are estimated by analyzing the transfer matrix of each cell of the resulting periodic structure. The numerical model is used to predict the dynamic response of the plates and to study their propagation and attenuation characteristics for various configurations. The presented numerical results demonstrate the simplicity and the effectiveness of the proposed treatment, which reduces the transmission of waves and the plate vibrations over specified, especially low frequency bands.