A simplified fluid structure interaction model for the assessment of ship hard grounding
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2022-03
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Language
en
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Journal of Marine Science and Technology (Japan), Volume 27, issue 1, pp. 695-711
Abstract
The structural damage of ships in navigational accidents is influenced by the hydrodynamic properties of surrounding water. Fluid structure interactions (FSI) in way of grounding contact can be idealized by combining commercial FEA tools and specialized hydrodynamic solvers. Despite the efficacy of these simulations, the source codes idealizing FSI are not openly available, computationally expensive and subject to limitations in terms of physical assumptions. This paper presents a unified FSI model for the assessment of ship crashworthiness following ship hard grounding. The method uses spring elements for the idealization of hydrostatic restoring forces in 3 DoF (heave, pitch, roll) and distributes the added masses in 6 DoF on the nodal points in way of contact. Comparison of results against the method of Kim et al. (2021) for the case of a barge and a Ro–Ro passenger ship demonstrate excellent idealization of ship dynamics. It is concluded that the method could be useful for rapid assessment of ship grounding scenarios and associated regulatory developments.Description
| openaire: EC/H2020/814753/EU//FLARE
Keywords
Ship grounding, Rapid assessment, Fluid structure interactions (FSI), Spring elements, Restoring forces, Added mass;
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Citation
Kim, S, Sohn, J M, Kujala, P & Hirdaris, S 2022, ' A simplified fluid structure interaction model for the assessment of ship hard grounding ', Journal of Marine Science and Technology (Japan), vol. 27, no. 1, pp. 695-711 . https://doi.org/10.1007/s00773-021-00862-6