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Modal damping ratios of the two-degree-of-freedom acoustic model having a Helmholtz resonator
Nihon Kikai Gakkai ronbunshu, 2016 Helmholtz resonators are used in many industrial products as devices for reducing low-frequency noise. An advantage of the Helmholtz resonator is that the structure is simple and applicable to low-frequency noise for its size.
Shinichi MARUYAMA +2 more
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Elastic Helmholtz resonators [PDF]
The Journal of the Acoustical Society of America, 1992 The influence of wall elasticity on the response of a Helmholtz resonator is examined by analyzing the canonical case of a thin elastic spherical shell with a circular aperture subject to plane-wave excitation. By neglecting the thickness of the wall and representing the elasticity via a thin shell theory the problem is reduced to one of solving an ...
A. N. Norris, G. Wickham
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Leakage Effect on the Transmission Properties of a Duct Loaded with a Helmholtz Resonator
Applied Sciences, 2022 The characteristics of transmitted acoustic field have important significance to the leakage detection and the acoustic metasurface technology. When the additional leak holes are present, the conventional single neck Helmholtz resonator will naturally ...
Yang Ou, Yonghui Zhao
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Journal of Low Frequency Noise, Vibration and Active Control, 2021 In this work, modified designs of Helmholtz resonators with extended deflected neck are proposed, numerically evaluated and optimized aiming to achieve a better transmission loss performance over a broader frequency range.
Weiwei Wu, Yiheng Guan
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Applied Sciences, 2021 With the rapid increase in automobiles, the importance of reducing low-frequency noise is being emphasized for a comfortable urban environment. Helmholtz resonators are widely used to attenuate low-frequency noise over a narrow range.
Byunghui Kim +6 more
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Applied Sciences, 2019 Helmholtz resonators, traditionally designed as a narrow neck backed by a cavity, are widely applied to attenuate combustion instabilities in gas turbine engines.
Jianguo Wang +3 more
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AIP Advances, 2023 Helmholtz resonator (HR) is widely used in various fields, but the classic HR usually should satisfy the acoustically compact condition, which limits the application range of the classic HR.
Yijun Mao, Mengfan Shi, Chen Xu
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AIP Advances, 2019 We describe an acoustic impedance matching method that permits perfect sound transmission between waveguides of different impedances as set by their cross sectional areas.
William M. Robertson +2 more
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Optimal Lower Bound of the Resonance Widths for the Helmholtz Resonator [PDF]
Annales Henri Poincaré, 2015 25 pages, 2 ...
MARTINEZ, ANDRE' GEORGES +1 more
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Journal of Low Frequency Noise, Vibration and Active Control, 2022 As an applicable noise attenuator, Helmholtz resonator is mainly used to dampen acoustic noise at low- and medium-frequency ranges. It is typically implemented in combustion-engines and gas turbines to dampen thermoacoustic instabilities. However, it has
Weiwei Wu, Yiheng Guan
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