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Theoretical and experimental study of sound propagation in ducts with spatially periodic area changes

Publication ,  Journal Article
Bliss, DB; Nesbitt, JR; Danilov, PV
Published in: 12th International Congress on Sound and Vibration 2005, ICSV 2005
December 1, 2005

Sound propagation of one-dimensional waves through a tube with periodic area changes is studied theoretically and experimentally. The resulting wave behavior is similar to that observed for periodic structures, with Bloch waves, pass-bands and stop-bands. The feasibility of this configuration is studied as a method to reduce sound propagation and radiation from noise sources having harmonics that fall in the stop bands. This approach to noise reduction is shown to give substantial attenuation. The bandwidth of the stop bands makes the design robust so that careful tuning is not required. Performance for broadband sound reduction is also evaluated. The relationship between area change parameters and the location and width of stop-bands is discussed. Experimental measurements show good agreement with theoretical predictions as long as the actual geometry is accurately modeled.

Duke Scholars

Published In

12th International Congress on Sound and Vibration 2005, ICSV 2005

Publication Date

December 1, 2005

Volume

3

Start / End Page

2366 / 2373
 

Citation

APA
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ICMJE
MLA
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Bliss, D. B., Nesbitt, J. R., & Danilov, P. V. (2005). Theoretical and experimental study of sound propagation in ducts with spatially periodic area changes. 12th International Congress on Sound and Vibration 2005, ICSV 2005, 3, 2366–2373.
Bliss, D. B., J. R. Nesbitt, and P. V. Danilov. “Theoretical and experimental study of sound propagation in ducts with spatially periodic area changes.” 12th International Congress on Sound and Vibration 2005, ICSV 2005 3 (December 1, 2005): 2366–73.
Bliss DB, Nesbitt JR, Danilov PV. Theoretical and experimental study of sound propagation in ducts with spatially periodic area changes. 12th International Congress on Sound and Vibration 2005, ICSV 2005. 2005 Dec 1;3:2366–73.
Bliss, D. B., et al. “Theoretical and experimental study of sound propagation in ducts with spatially periodic area changes.” 12th International Congress on Sound and Vibration 2005, ICSV 2005, vol. 3, Dec. 2005, pp. 2366–73.
Bliss DB, Nesbitt JR, Danilov PV. Theoretical and experimental study of sound propagation in ducts with spatially periodic area changes. 12th International Congress on Sound and Vibration 2005, ICSV 2005. 2005 Dec 1;3:2366–2373.

Published In

12th International Congress on Sound and Vibration 2005, ICSV 2005

Publication Date

December 1, 2005

Volume

3

Start / End Page

2366 / 2373