Vibro-Acoustic Performance of a Fluid-Loaded Periodic Locally Resonant Plate

The vibro-acoustic performance of a fluid-loaded periodic locally resonant (LR) plate was examined in this research, with specific focus on the effect water fluid vibration and sound radiation LR structure. analytical models plate’s band gap, vibration, acoustic were theoretically derived closed-form solutions, which can be used to predict general rules underwater results show that band-gap width Bragg frequency are significantly reduced when is considered. Besides, range tuned control for much narrower than without fluid. reason inducing above effects also given physically explained by attached mass caused In addition, enhanced efficiency close gap discussed, change mode from corner or edge monopole radiation. Furthermore, adding small damping into resonator could reduce below attenuation zone broadened. Thus, designing resonators proper an efficient method make more beneficial noise reduction water-surrounding applications.