Sound transmission loss of metamaterial-based thin plates with multiple subwavelength arrays of attached resonators

This paper is concerned with sound transmission loss of metamaterial-based thin plates consisting of multiple subwavelength arrays of spring–mass resonators attached to an unbounded homogenous thin plate. Two analytical wave approaches are developed for the calculation of diffuse field sound transmi...

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Bibliographic Details
Published in:Journal of sound and vibration 2012-12, Vol.331 (25), p.5408-5423
Main Authors: Xiao, Yong, Wen, Jihong, Wen, Xisen
Format: Article
Language:English
Subjects:
Acoustics
Arrays
Density
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Mathematical analysis
Noise: its effects and control
Physics
Resonators
Sound
Sound transmission
Thin plates
Vibration
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Summary:This paper is concerned with sound transmission loss of metamaterial-based thin plates consisting of multiple subwavelength arrays of spring–mass resonators attached to an unbounded homogenous thin plate. Two analytical wave approaches are developed for the calculation of diffuse field sound transmission loss of such metamaterial-based thin plates. Numerical results show that a metamaterial-based plate can result in much higher sound transmission loss than a bare plate (with the same surface mass density) at frequencies within the mass-law region and the coincidence region. It is also demonstrated that by using an extremely thin plate to form a metanaterial-based plate, the construction can be implemented as a potential sound insulation material with good performance at low frequencies.
ISSN:0022-460X
1095-8568
DOI:10.1016/j.jsv.2012.07.016