The influence of structural modelling on the dynamic behaviour of a bulker in waves


Hirdaris, S.E., Miao, S.H., Price, W.G. and Temarel, P. (2006) The influence of structural modelling on the dynamic behaviour of a bulker in waves. In, Fourth International Conference on Hydroelasticity in Marine Technology, Wuxi, China, 10 - 14 Sep 2006. Beijing, China, National Defence Industry Press, 25-34.

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Description/Abstract

Modelling assumptions when idealising the structure of mono-hulled vessels may have an effect on the predicted wave-induced loads, when using fluid-flexible structure interaction (FFSI) models. The aim of this paper is to demonstrate the influence of structural modelling on the dynamic behaviour of a bulker in waves, a ship structure with large deck openings. Three idealisations are used, namely the original bulker with all relevant deck openings, and the open and closed ship configurations where the deck structure between deck openings is ignored and plated over, respectively. Two- and three-dimensional hydroelasticity analyses are applied for each configuration and model. Dry hull natural frequencies, mode shapes and steady state wave-induced loads, such as vertical and horizontal bending moments and twisting moment, in regular waves are presented and discussed for all configurations. It is shown that the major influence of the structural modelling occurs in the antisymmetric dynamic behaviour of this vessel.

Item Type: Conference or Workshop Item (Paper)
Keywords: bulk carriers, structural modelling, fluid-flexible structure interaction, finite element analysis, strip theory idealisation, pulsating source idealisation, wave-induced loads, symmetric response, antisymmetric response
Subjects: V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering
Divisions: University Structure - Pre August 2011 > School of Engineering Sciences > Fluid-Structure Interactions
ePrint ID: 43904
Date Deposited: 06 Feb 2007
Last Modified: 27 Mar 2014 18:28
Publisher: National Defence Industry Press
URI: http://eprints.soton.ac.uk/id/eprint/43904

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