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Indexed by:期刊论文

Date of Publication:2017-11-10

Journal:MODERN PHYSICS LETTERS B

Included Journals:SCIE、Scopus

Volume:31

Issue:31

ISSN No.:0217-9849

Key Words:Local resonance plate; damping ratios; vibro-acoustic behavior; stopbands

Abstract: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.