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    <title>UTas ePrints - The whipping vibration of large high speed catamarans</title>
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    <meta content="Thomas, Giles A." name="eprints.creators_name" />
<meta content="Davis, Michael R." name="eprints.creators_name" />
<meta content="Holloway, Damien S." name="eprints.creators_name" />
<meta content="Roberts, Timothy J." name="eprints.creators_name" />
<meta content="gthomas@amc.edu.au" name="eprints.creators_id" />
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<meta content="The whipping vibration of large high speed catamarans" name="eprints.title" />
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<meta content="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." name="eprints.abstract" />
<meta content="2003" name="eprints.date" />
<meta content="International Journal of Maritime Engineering" name="eprints.publication" />
<meta content="145" name="eprints.volume" />
<meta content="289-304" name="eprints.pagerange" />
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<meta content="1. Morris, J.A., ‘A Three Dimensional Structural
Analysis of a Large Wave Piercing Catamaran Design’,
IMAS 91 High Speed Marine Transportation, 1991.
2. Humphrey, R., Nybø, T.., ‘Det Norske Veritas - Direct
Calculation Methods for High Speed, Light Craft and
Naval Surface Craft.’, Pacific 2002, 2002.
3. McCallum, J., ‘The Strength of Fast Cargo Ships’,
Transactions RINA, Vol. 117, 1975.
4. Yamamoto, Y., Fujino, M., Fukasawa, T., Ohtsubo,
H., ‘Slamming and Whipping of Ships among Rough
Seas’, Proceedings Euromech Colloquium, 1979.
5. Ochi, M.K., Motter, L.E., ‘Prediction of Slamming
Characteristics and Hull Responses for Ship Design’,
Transactions SNAME, 1973
6. Kawakami, M., Michimoto, J., Kobayashi, K.,
‘Prediction of Long-Term Whipping Vibration Stress due
to Slamming of Large Full Ship in Rough Seas’,
International Shipbuilding Progress, Vol. 24, No. 272,
1977.
7. Aertssen, G., ‘An Estimate of Whipping Vibration
Stress based on Slamming Data of Four Ships’,
International Shipbuilding Progress, Vol. 26, No. 294,
1979.
8. Clarke, J.D., ‘Prediction of Fatigue Cracking in
Warship Hulls’, Third International Symposium on
Practical Design of Ships and Mobile Units, 1987.
9. Fukasawa, T., Yamamoto, Y., Fujino, M., Motora, S.,
‘Motion and Longitudinal Strength of a Ship in Head Sea
and the Effects of Non-Linearities, Transactions Society
of Naval Architects Japan, No. 150, 1981.
10. McTaggart, K., Datta, I., Stirling, A., Gibson, S.,
Glen, I., ‘Motions and Loads of a Hydroelastic Frigate
Model in Severe Seas’, Transactions SNAME, Vol. 105,
1997.
11. Evans, J.H., ‘Preliminary Design Estimation of Hull
Girder Response to Slamming’, Transactions SNAME,
Vol. 90, 1982. 12. Clarke, J.D., ‘Measurements of Hull Stresses in Two
Frigates during a Severe Weather Trial’, Transactions
RINA, Vol. 124, 1982.
13. Olkinuora, P., Knuuttila, E., Hakala, M., Rintala, S.,
Vuorio, J., ‘Structural Design of an Aluminium Missile
Boat’, FAST’91, 1991.
14. Kannari, P., Klinge, P., Rintala, S., Karppinen, T.,
Mikkola, T.P.J., Rantanen, A., ‘Comparison of Simulated
Global Stresses with Full-Scale Measurements on an
Aluminium Fast Patrol Vessel’, Hydroelasticity in
Marine Technology, 1998.
15. Friis-Hansen, P., Jensen, J.J., Pedersen P.T., ‘Long
Term Springing and Whipping Stresses in High Speed
Vessels’, FAST’95, 1995.
16. Watson, N.L., Davis, M.R., Roberts, T.J., ‘Shipborne
Measurement of Sea Conditions and Seakeeping
Response of High Speed Ferries’, FAST’97, 1997.
17. Steinmann, P., Fach, K., Menon, B., ‘Global and
Slamming Sea Loads Acting on an 86m High Speed
Catamaran Ferry’, Fast’99, 1999.
18. Hermunstad, O.A., Aarsnes, J.V., Moan, T.,
‘Hydroelastic Analysis of a Flexible Catamaran and
Comparison with Experiments’, FAST’97, 1997.
19. Haugen, E.M., Faltinsen, O., ‘Theoretical Studies of
Wetdeck Slamming and Comparisons with Full Scale
Measurements’, FAST’99, 1999.
20. Louarn, F., Temarel, P., ‘An Investigation of the
Structural Dynamics of a Racing Yacht’, 14th
Chesapeake Sailing Yacht Symposium, 1999.
21. Price, W.G., Temarel, P., ‘Hydroelastic Analysis of a
SWATH in Waves’, Hydroelasticity in Marine
Technology, 1994.
22. Hakala, M.K., ‘Application of the Finite Element
Method to Fluid-Structure Interaction in Ship Vibration’,
Technical Research Centre of Finland, Research Report
433, 1986.
23. Oei, T.H., ‘Finite Element Ship Hull Vibration
Analysis Compared with Full Scale Measurements’,
Netherlands Maritime Institute Report, 1976.
24. Bishop, R.E.D., Price, W.G., ‘Hydroelasticity of
Ships’, Cambridge University Press, 1979.
25. Betts, C.V., Bishop, R.E.D., Price, W.G., ‘A Survey
of Internal Damping’, Transactions RINA, Vol.119,
1977.
26. Thomas, G., Davis, M.R., Whelan, J., Roberts, T.J.,
‘Dynamic Response of Large High Speed Catamarans’,
FAST ’01, 2001.
27. Thomas, G., Davis, M.R., Holloway, D. S., Watson,
N.L., Roberts, T.J., ‘The Slamming Response of a Large
High Speed Wave-Piercer Catamaran’, SNAME Marine
Technology Journal, Vol. 40, No. 2, 2003.
28. ‘NASTRAN Basic Dynamic Analysis’ MSC.
Software, Los Angeles, USA, 2001.
29. Doctors, L.J., ‘Application of the Boundary-Element
Method to Bodies Oscillating Near a Free Surface’, 13th
Australasian Fluid Mechanics Conference, Melbourne,
Australia, 1987.
30. Holloway, D.S., ‘A High Froude Number Time
Domain Strip Theory Applied to the Seakeeping of
Semi-SWATHS’, PhD Thesis, University of Tasmania,
1998.
31. Salvesen, N., Tuck, E.O., Faltinsen, O., ‘Ship
Motions and Sea Loads’, Transactions SNAME, Vol. 78,
1970.
32. Holloway, D.S., Thomas, G., Davis, M.R., ‘Added
Mass of Whipping Modes for Ships at High Froude
Number by a Free Surface Boundary Element Method
Coupled with Strip Theory’, International Congress on
Industrial and Applied Mathematics, July 2003.
33. Tongue, E., ‘Fatigue Assessment of Aluminium Fast
Craft’, Third Forum on Aluminium Ships, Norway, 1998.
34. Sharp, M.L., Nordmark, G.E., Menzemer, C.C.,
‘Fatigue Design of Aluminium Components and
Structures’, McGraw-Hill, 1996.
35. ‘Structural Use of Aluminium, BS 8118, Part1, Code
of Practice for Design, 1992: Part 2, Specification for
Materials, Workmanship and Protection’, British
Standards, 1992.
36. Collins, J.A., ‘Failure of Materials in Mechanical
Design’, John Wiley &amp; Sons, 1993." name="eprints.referencetext" />
<meta content="Thomas, Giles A. and Davis, Michael R. and Holloway, Damien S. and Roberts, Timothy J. (2003) The whipping vibration of large high speed catamarans. International Journal of Maritime Engineering, 145 . pp. 289-304. ISSN 1479-8751" name="eprints.citation" />
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<meta content="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." name="DC.description" />
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    <h1 class="ep_tm_pagetitle">The whipping vibration of large high speed catamarans</h1>
    <p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Thomas, Giles A.</span> and <span class="person_name">Davis, Michael R.</span> and <span class="person_name">Holloway, Damien S.</span> and <span class="person_name">Roberts, Timothy J.</span> (2003) <xhtml:em>The whipping vibration of large high speed catamarans.</xhtml:em> International Journal of Maritime Engineering, 145 . pp. 289-304. ISSN 1479-8751</p><p style="margin-bottom: 1em" class="not_ep_block"></p><table style="margin-bottom: 1em" class="not_ep_block"><tr><td valign="top" style="text-align:center"><a href="http://eprints.utas.edu.au/2293/1/Gilesthomas.pdf"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" border="0" class="ep_doc_icon" /></a></td><td valign="top"><a href="http://eprints.utas.edu.au/2293/1/Gilesthomas.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />2806Kb</td><td><form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/request_doc"><input value="3040" name="docid" accept-charset="utf-8" type="hidden" /><div class=""><input value="Request a copy" name="_action_null" class="ep_form_action_button" onclick="return EPJS_button_pushed( '_action_null' )" type="submit" /> </div></form></td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://www.rina.org.uk/search_publications.html">http://www.rina.org.uk/search_publications.html</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">This paper reports on a study into the whipping behaviour of large high-speed aluminium catamarans and its influence&#13;
on fatigue life. Full-scale measurements of slam events and exciter tests have been conducted on two large high-speed&#13;
catamarans to investigate the modes, frequencies and damping of their vibratory whipping response. A corresponding&#13;
theoretical modal analysis was also conducted utilising finite element analysis and including fluid-structure interaction.&#13;
Good correlation between the predicted and measured frequencies and mode shapes was found. The influence of forward&#13;
speed on the added mass formulation was found to be negligible, while vessel loading conditions were found to have a&#13;
significant influence on modal frequencies. Results are also presented from a fatigue study which highlight the influence&#13;
of whipping on fatigue life.</p></div><table style="margin-bottom: 1em" border="0" cellpadding="3" class="not_ep_block"><tr><th valign="top" class="ep_row">Item Type:</th><td valign="top" class="ep_row">Article</td></tr><tr><th valign="top" class="ep_row">Subjects:</th><td valign="top" class="ep_row"><a href="http://eprints.utas.edu.au/view/subjects/291200.html">290000 Engineering and Technology &gt; 291200 Maritime Engineering</a></td></tr><tr><th valign="top" class="ep_row">Collections:</th><td valign="top" class="ep_row">UNSPECIFIED</td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">2293</td></tr><tr><th valign="top" class="ep_row">Deposited By:</th><td valign="top" class="ep_row"><span class="ep_name_citation"><span class="person_name">Dr Giles Thomas</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">30 Oct 2007 11:38</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">04 Feb 2008 10:53</td></tr><tr><th valign="top" class="ep_row">ePrint Statistics:</th><td valign="top" class="ep_row"><a target="ePrintStats" href="/es/index.php?action=show_detail_eprint;id=2293;">View statistics for this ePrint</a></td></tr></table><p align="right">Repository Staff Only: <a href="http://eprints.utas.edu.au/cgi/users/home?screen=EPrint::View&amp;eprintid=2293">item control page</a></p>
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