FLEXURAL VIBRATION BAND GAPS IN PERIODIC PLATES WITH FLUID LOADING

摘要

In this paper, the flexural vibration in periodic plates with fluid loading is studied theoretically. The effective wavenumber of the flexural wave through the plate with heavy fluid loading is obtained and the approximate transfer matrix method can be used to calculate the complex band structure to investigate the gap frequency range and the vibration attenuation. Furthermore, the effect of the fluid on the band gaps is considered. The existence of flexural vibration gaps in thin plate with fluid loading gives a new idea in vibration control of plate.