Release Time:2019-03-11  Hits:

Indexed by: Journal Article

Date of Publication: 2017-11-10

Journal: MODERN PHYSICS LETTERS B

Included Journals: Scopus、SCIE

Volume: 31

Issue: 31

ISSN: 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.