Study on broadband low-frequency sound insulation of multi-channel resonator acoustic metamaterials
Source abstract
Abstract
A novel acoustic metamaterial structure, made up of both resonator and multiple channels, is proposed to insulate low-frequency broadband noises. Three bandgaps with a total width of 658 Hz can be obtained below 900 Hz when the structure appears as a single negative characteristic within specific frequency ranges. These bandgaps are caused by the standing-wave characteristics under the coupling action of the interior and exterior cavities and the multiple channels. By changing structural parameters and materials, the low-frequency broadband sound insulation performance of the structure can be improved. Experimental results further prove the sound insulation characteristics. The results obtained herein can be used as a guide toward achieving low-frequency broadband sound insulation using a lightweight structure.
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Research context
OpenAlex topics: Acoustic Wave Phenomena Research · Noise Effects and Management · Hearing Loss and Rehabilitation
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Mechanical and Automotive Engineering, Bengbu University 1 , No. 1866, Caoshan Road, Longzihu District, Bengbu 233000, China
School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science 2 , No. 333, Longteng Road, Songjiang District, Shanghai 201620, China
Funding
Project of National Natural Science Foundation of China · Project of Natural Science Foundation of Bengbu University · Program for Professor of Special Appointment Shanghai Institutions of Higher Learning · Technical Service Platform for Vibration and Noise Testing Control of New Energy Vehicles
References (60)
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