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Boundary element methods in the prediction of the acoustic damping of ship whipping vibrations

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posted on 2023-05-25, 22:17 authored by Holloway, DS, Thomas, GA, Davis, MR
Damping of ship whipping vibrations following a slam due to wave impact is traditionally assumed to be primarily of material or structural origin. However, several mechanisms of energy dissipation to the surrounding water exist, including gravity and acoustic waves. Neither transports much energy for the lowest frequency modes, in which the acoustic wavelength may be an order or magnitude greater than the ship length whereas the gravity wavelength is at least an order of magnitude shorter than the ship beam. However, the acoustic damping ratio increases as the fourth power of frequency, becoming significant for higher frequency modes.

History

Publication title

Australian and New Zealand Industrial and Applied Mathematics Journal

Volume

45

Article number

E

Number

E

Pagination

845-856

ISSN

1446-8735

Publication status

  • Published

Repository Status

  • Open

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