Radiation efficiency of natural modes of plates with beam stiffeners.

Radiation efficiency of natural modes of plates with beam stiffeners. Research Abstract Details 

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Radiation efficiency of natural modes of plates with beam stiffeners. Abstract Text:

In this paper, the radiation efficiency of the natural modes of finite plates with attached beams is considered. Firstly, the scattering of flexural waves, by the beams and the boundaries, in the plate is considered. The reflection and transmission coefficients along with the near-field coefficients of the beam are used to calculate the vibration field of the plate, by taking into account an infinite number of reflections from the boundaries. A wavenumber transform of the vibration velocity field is used to calculate the sound power and the radiation efficiency. Numerical results are presented, for a number of attached beams, and show that the beams introduce ripples in the radiation efficiency curve, below a certain frequency. The amplitude of the ripples is controlled by the mass and the torsional stiffness of the attached beams whereas the stiffness of the beam has little influence. The results are compared with measurements of the radiation efficiency of plates with attached beams.

Radiation efficiency of natural modes of plates with beam stiffeners. Publishing Authors By Initials

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Radiation efficiency of natural modes of plates with beam stiffeners. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: The Journal of the Acoustical Society of America

VOLUME: 123

Page Numbers: 3314

Journal Abbreviation: J. Acoust. Soc. Am.

ISSN: 1520-8524

DAY: 5

MONTH: May

YEAR: 2008

Radiation efficiency of natural modes of plates with beam stiffeners. Information

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LANGUAGE: eng

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Grant and Affiliation Information for Radiation efficiency of natural modes of plates with beam stiffeners.

AFFILIATION: Loughborough University, Department of Aeronautical and Automotive Engineering, Ashby Road, LE11 3TU Loughborough, UK, a.rousounelos@lboro.ac.uk.

Country: United States

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MEDLINETA: J Acoust Soc Am

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