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Slamming and Whipping of Wave-Piercing Catamarans


Davis, MR and Thomas, GA and Holloway, DS and Lavroff, J and Amin, WAI and Matsubara, S and Roberts, T, Slamming and Whipping of Wave-Piercing Catamarans, 5th International Conference on Hydroelasticity in Marine Technology, 8-10 September, Southampton, UK, pp. on CD. (2009) [Refereed Conference Paper]

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Wavelet analysis identifies slamming events during sea trials. Maximum loads, load impulses and energy imparted to the structure by slams have been evaluated. A segmented hydro-elastic model has been developed to simulate the main whipping mode, elastic links in the model facilitating measurement of bending moments and determination of slam loads. Slams of up to 2200 tonnes peak force can occur when the wet deck arches between the main hulls and centre bow fill, imparting impulses of up to 938 tonne seconds and 3.5 MJ of strain energy. Energy is transferred to the whipping mode which has a damping ratio in the range 0.02 to 0.06 depending upon forward speed.

Item Details

Item Type:Refereed Conference Paper
Keywords:Slamming; whipping; wave-piercer hull; catamaran; impulse; strain energy.
Research Division:Engineering
Research Group:Maritime engineering
Research Field:Naval architecture
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in engineering
UTAS Author:Davis, MR (Professor Michael Davis)
UTAS Author:Thomas, GA (Professor Giles Thomas)
UTAS Author:Holloway, DS (Associate Professor Damien Holloway)
UTAS Author:Lavroff, J (Dr Jason Ali-Lavroff)
UTAS Author:Amin, WAI (Dr Walid Amin)
UTAS Author:Matsubara, S (Dr Shinsuke Matsubara)
ID Code:58632
Year Published:2009
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2009-10-16
Last Modified:2014-12-19
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