Analytical coupled vibroacoustic modeling of membrane-type acoustic metamaterials: Membrane model

• DOI: 10.1121/1.4892870
• Publication Date: 2014-09-04T11:33:05Z
• Authors: Yangyang Chen; Guoliang Huang; Xiaoming Zhou; Gengkai Hu; Chin-Teh Sun
• Keywords: Eccentricity (behavior); Sound transmission class

Membrane-type acoustic metamaterials (MAMs) have demonstrated unusual capacity in controlling low-frequency sound transmission/reflection. In this paper, an analytical vibroacoustic membrane model is developed to study transmission behavior of the MAM under a normal incidence. The composed prestretched elastic with attached rigid masses. To accurately capture finite-dimension mass effects on deformation, point matching approach adopted by applying set distributed forces along interfacial boundary between masses and membrane. accuracy capability theoretical verified through comparison finite element method. particular, microstructure such as weight, size, eccentricity mass, pretension, thickness resulting peak dip frequencies are quantitatively investigated. New found for one multiple eccentric can be served efficient tool design membrane-type metamaterials.