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The whipping vibration of large high speed catamarans


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Thomas, GA, Davis, MR, Holloway, DS and Roberts, TJ 2003 , 'The whipping vibration of large high speed catamarans' , International Journal of Maritime Engineering, vol. 145 , pp. 289-304 .

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This paper reports on a study into the whipping behaviour of large high-speed aluminium catamarans and its influence
on fatigue life. Full-scale measurements of slam events and exciter tests have been conducted on two large high-speed
catamarans to investigate the modes, frequencies and damping of their vibratory whipping response. A corresponding
theoretical modal analysis was also conducted utilising finite element analysis and including fluid-structure interaction.
Good correlation between the predicted and measured frequencies and mode shapes was found. The influence of forward
speed on the added mass formulation was found to be negligible, while vessel loading conditions were found to have a
significant influence on modal frequencies. Results are also presented from a fatigue study which highlight the influence
of whipping on fatigue life.

Item Type: Article
Authors/Creators:Thomas, GA and Davis, MR and Holloway, DS and Roberts, TJ
Journal or Publication Title: International Journal of Maritime Engineering
ISSN: 1479-8751
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