On the Sound Radiation From a Circular Hatchway

• Autorzy: Arenas J. P.
• Języki publikacji: EN

Abstrakty

EN

Low-frequency sound radiation from vibrating plates is a practical problem often found in engineering applications. In this article, the sound radiation from a circular hatchway is examined using a discrete approach based in the acoustic resistance matrix. Since this matrix can be combined with the volume velocity vector on the discretized vibrating circular surface, the sound radiation efficiency can be estimated through matrix approaches. The limitation of the approach is discussed by using benchmark results presented in previous works. The method produces acceptable results in low frequencies when the response of the plate is dominated by one low structural mode. When the response of more than one mode is significant, the method gives good estimation of the total sound power just for frequencies up to the first resonance. However, the method can be applied to complex and irregular vibrating plane surfaces.

Słowa kluczowe

EN

low-frequency noise; sound radiation; circular plate; hatchway

• Wydawca: Taylor & Francis
• Czasopismo: International Journal of Occupational Safety and Ergonomics
• Rocznik: 2009
• Tom: Vol. 15, No. 4
• Strony: 401--407
• Opis fizyczny: Bibliogr. 12 poz., rys., wykr.

Twórcy

autor

Arenas J. P.

• Institute of Acoustics, University Austral of Chile, Valdivia, Chile

Bibliografia

• 1.Bauer HF, Eidel W. Determination of the lower natural frequencies of circular plates with mixed boundary conditions. J Sound Vib. 2006;292:742–64.
• 2.Bauer HF, Eidel W. Transverse vibration and stability of spinning circular plates of constant thickness and different boundary conditions. J Sound Vib. 2007;300:877–95.
• 3.Rdzanek WP, Engel Z, Rdzanek W. Theoretical analysis of sound radiation of an elastically supported circular plate. J Sound Vib. 2003;265:155–74.
• 4.Rdzanek WP, Rdzanek WJ, Engel Z, Szemela K. The modal low frequency noise of an elastically supported circular plate. International Journal of Occupational Safety and Ergonomics (JOSE). 2007;13:147–57.
• 5.Arenas JP, Crocker MJ. Sound radiation efficiency of a baffled rectangular plate excited by harmonic point forces using its surface resistance matrix. Int J Acoust Vib. 2002;7:217–29.
• 6.Leissa A. Vibration of plates. New York, NY, USA: Acoustical Society of America; 1993.
• 7.Meirovitch L. Analytical methods in vibration. New York, NY, USA: MacMillan; 1967.
• 8.Berkhoff AP. Sensor scheme design for active structural acoustic control. J Acoust Soc Am. 2000;108:1037–45.
• 9.Arenas JP. Numerical computation of the sound radiation from a planar baffled vibrating surface. J Comp Acoust. 2008;16:321–41.
• 10.Gomperts MC. Sound radiation from baffled, thin, rectangular plates. Acustica. 1977;37:93–102.
• 11.Xie G, Thompson DJ, Jones CJC. The radiation efficiency of baffled plates and strips. J Sound Vib. 2005;280:181–209.
• 12.Guyader JL. Sound radiation from structures and their response to sound. In: Crocker MJ, editor. Handbook of noise and vibration control. Hoboken, NJ, USA: Wiley; 2007. p. 79–100.