Noise reduction inside a cavity coupled to a flexible plate with embedded 2-D acoustic black holes

• Published in: Journal of sound and vibration Vol. 455; pp. 324 - 338
• Main Authors: Ji, Hongli, Wang, Xiaodong, Qiu, Jinhao, Cheng, Li, Wu, Yipeng, Zhang, Chao
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier Ltd 01.09.2019; Elsevier Science Ltd
• Subjects: Acoustic black hole; Acoustic coupling; Acoustic noise; Acoustics; Black holes; Cavity noise; Computer simulation; Coupling analysis; Coupling coefficients; Decoupling; Embedding; Finite element method; Frequency ranges; Noise; Noise reduction; Plates (structural members); Sound fields; Structural vibration; Two dimensional analysis; Vibration; Vibration control; Vibration damping; Vibro-acoustic properties; Wave propagation; Coupling analysis; Cavity noise; Acoustic black hole; Vibro-acoustic properties

Acoustic black hole (ABH) structures have been exploited to manipulate the flexural wave propagation with results showing a great potential for structural vibration damping enhancement and suppression of free-field acoustic noise radiation. In the present paper, ABHs are used to reduce the noise ins...