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http://dx.doi.org/10.5050/KSNVN.2005.15.4.412

Acoustic Radiation from Radial Vibration Modes of a Thick Annular Disk  

Lee, Hyeongill (삼성전자 디지털프린팅(사))
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.15, no.4, 2005 , pp. 412-420 More about this Journal
Abstract
This article proposes analytical solutions for sound radiation from radial vibration modes of a thick annular disk. Structural eigensolutions are calculated using the transfer matrix method. The far-field sound pressure distribution is obtained using two alternate methods. In the first method, pressure is calculated using the Rayleigh integral technique. The second method treats sound radiating radial surfaces as cylindrical radiators of finite length. The Sinc function approach is employed for calculations. Acoustic powers and radiation efficiencies of radial modes are also determined from the far-field sound pressure calculations. Analytical predictions match well with measured data as well as computational results from a finite element code in terms of structural eigensolutions and from a boundary element code in terms of sound pressure, directivity etc.
Keywords
Annular Disk; Radial Mode; Sound Radiation;
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