Acoustic response of multi-stopband local resonance plate

Sun, Yonggan; Li, Sheng; Jiao, Ziquan
November 2017
Modern Physics Letters B;Nov2017, Vol. 31 Issue 31, p-1
Academic Journal
This paper primarily investigates the effect of damping ratios on the acoustic response of a multi-stopband local resonance plate consisting of two-dimensional periodic arrays of tuned mass-spring combinations attached to a thin homogeneous plate. A Floquet-Bloch approach is employed to demonstrate the stopbands for an infinite plate. In addition, the acoustic radiation behavior and average sound radiation pressure level of finite plates are computed. A continuous and much wider stopband with good vibro-acoustic behavior can be obtained when care is taken in the design of the damping ratios of local resonance plates.


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