Helmholtz resonators are used in a variety of applications to reduce the transmission of unwanted sound. This work demonstrates that mechanically coupled resonators can be used to design a particular transmission loss response, provide a wider bandwidth of attenuation, and adapt the transmission loss characteristics of a structure to attenuate disturbances of varying frequency. An analytical model is developed for a single, coupled resonator system mounted on a one-dimensional duct. Experiments are conducted on a similar system that uses a thin membrane to couple the resonator volumes. A simplistic model of the membrane is presented to estimate equivalent “piston” properties from measured physical properties. Experiments confirm that the coupled resonator system behaves as predicted by the model simulations, and that the transmission loss can be shaped by adjusting the mass or stiffness of the coupling member. The experimental results also illustrate the structural-acoustic coupling effects between the resonators and the membrane, and indicate that a more inclusive model of the membrane and acoustic dynamics is required in order to accurately predict the resonator transmission loss.
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January 2001
Technical Papers
Coupled Helmholtz Resonators for Acoustic Attenuation
Steve Griffin, Basic Research Manager,,
Steve Griffin, Basic Research Manager,
Spacecraft Component Technologies Branch, Air Force Research Laboratory, 3550 Aberdeen Avenue, Kirtland AFB, NM 87117
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Steven A. Lane, Research Scientist, Mem. ASME,
Steven A. Lane, Research Scientist, Mem. ASME
Jackson and Tull Engineering, 1900 Randolph Road, SE, Suite H, Albuquerque, NM 87106
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Steve Huybrechts, Chief,
Steve Huybrechts, Chief,
Spacecraft Component Technologies Branch, Air Force Research Laboratory, 3550 Aberdeen Avenue, Kirtland AFB, NM 87117
Search for other works by this author on:
Steve Griffin, Basic Research Manager,
Spacecraft Component Technologies Branch, Air Force Research Laboratory, 3550 Aberdeen Avenue, Kirtland AFB, NM 87117
Steven A. Lane, Research Scientist, Mem. ASME
Jackson and Tull Engineering, 1900 Randolph Road, SE, Suite H, Albuquerque, NM 87106
Steve Huybrechts, Chief,
Spacecraft Component Technologies Branch, Air Force Research Laboratory, 3550 Aberdeen Avenue, Kirtland AFB, NM 87117
Contributed by the Technical Committee on Vibration and Sound for publication in the JOURNAL OF VIBRATION AND ACOUSTICS. Manuscript received Aug. 1999; revised Aug. 2000. Associate Editor: R. L. Clark.
J. Vib. Acoust. Jan 2001, 123(1): 11-17 (7 pages)
Published Online: August 1, 2000
Article history
Received:
August 1, 1999
Revised:
August 1, 2000
Citation
Griffin, S., Lane, S. A., and Huybrechts, S. (August 1, 2000). "Coupled Helmholtz Resonators for Acoustic Attenuation ." ASME. J. Vib. Acoust. January 2001; 123(1): 11–17. https://doi.org/10.1115/1.1320812
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