Helmholtz Resonator with Extended Neck and Absorbing Material

Rong Bi; Zheng Shi Liu; Kai Ming Li; Jun Chen; Yong Wang

doi:10.4028/www.scientific.net/AMM.141.308

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Four-Point Regulation Algorithm for an End-Effector of a Flexible Drilling Robot
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Fuzzy Sliding Mode Control for a Three-Links Spatial Robot Based on RBF Neural Network
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Helmholtz Resonator with Extended Neck and Absorbing Material
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Investigation of Laser Parameters Influence of Direct-Part Marking Data Matrix Symbols on Aluminum Alloy
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 141Helmholtz Resonator with Extended Neck and...

Helmholtz Resonator with Extended Neck and Absorbing Material

Abstract:

The acoustic attenuation of Helmholtz resonator including an extended neck and sound–absorbing materials is investigated in current study. A two-dimensional analytical method based on mode matching method is developed to determine the Transmission loss (TL) of a piston-driven model of Helmholtz resonator. The resonance frequency and Transmission loss predicted from this method show reasonable agreements with published experimental results. Finally, this method is used to examine the effect of length of extended neck, extended neck with/without absorbing material and acoustic properties of sound-absorbing material on acoustic performance of Helmholtz resonator.