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Low frequency radiation from a finite flat plate into an acoustic fluid

Niederfrequente Leistungsabstrahlung einer endlichen Platte in ein akustisches Medium

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Summary

The power transmitted into an acoustic fluid by a finite flat plate vibrating with low frequency is investigated. It is found that large power drops occur at certain frequencies which are identical to the null power frequencies of the equivalent periodically supported infinite plate. The power transmitted at other frequencies is considerably different between the two cases. Numerical results for steel and adiprene plates which are simply supported and in contact with water are obtained and presented graphically.

Zusammenfassung

Die von einer endlichen, mit niedriger Frequenz schwingenden Platte an ein akustisches Medium übertragene Leistung wird untersucht. Es zeigt sich, daß bei bestimmten Frequenzen, die mit den Nulleistungsfrequenzen der äquivalenten periodisch unterstützten unendlichen Platte übereinstimmen, beachtliche Leistungsabfälle auftreten. Die übertragene Leistung bei anderen Frequenzen zeigt deutliche Unterschiede für die beiden Fälle. Numerische Resultate für einfach gelagerte Stahl- bzw. Adipreneplatten in Wasser werden erhalten und graphisch dargestellt.

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References

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Authors and Affiliations

  1. Applied Mathematics Division, Sandia Laboratories, 87115, Albuquerque, NM, USA

    W. E. Warren

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  1. W. E. Warren
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With 6 Figures

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Warren, W.E. Low frequency radiation from a finite flat plate into an acoustic fluid. Acta Mechanica 24, 129–139 (1976). https://doi.org/10.1007/BF01175762

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  • DOI: https://doi.org/10.1007/BF01175762

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