Article (Scientific journals)
Mechanical model for the analysis of ship collisions against reinforced concrete floaters of offshore wind turbines
Marquez, Lucas; Le Sourne, Hervé; Rigo, Philippe
2022In Ocean Engineering, 261, p. 111987
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Keywords :
Ship collisions; Offshore wind turbines; Floating structures; Reinforced concrete; Simplified methods; Finite element analysis
Abstract :
[en] This paper presents a simplified mechanical model to study ship collisions against Reinforced Concrete (RC) floaters of Floating Offshore Wind Turbines (FOWTs). The model accounts for the deformability of both striking ships and struck RC structures, including a method to evaluate the elastic–plastic response of RC slabs with normal horizontal restraints, while considering contact area effects and punching shear failure. In the proposed model, the internal mechanics are coupled to the external body dynamics, whilst the hydro-mechanical effects acting on the collided bodies such as hydrostatic restoring, viscous, and wave damping forces are accounted for by the large rotations rigid body dynamics solver MCOL. A parametric analysis is conducted on the model to study its sensitivity to changes in impact energy, impact location, reinforcement ratios, wall thicknesses, and striker rigidities, whose outcomes are compared with Non-Linear Finite Element (NLFE) simulations. The results show that the proposed model can accurately capture the penetrations in both structures, their body dynamics, and the contact force through the collision at a significantly lower computational cost than their NLFE counterpart.
Research center :
ArGEnCo, ANAST
Disciplines :
Civil engineering
Author, co-author :
Marquez, Lucas  ;  Université de Liège - ULiège > Département ArGEnCo > Constructions hydrauliques et navales
Le Sourne, Hervé  ;  Université de Liège - ULiège > Département ArGEnCo > Constructions hydrauliques et navales
Rigo, Philippe  ;  Université de Liège - ULiège > Urban and Environmental Engineering
Language :
English
Title :
Mechanical model for the analysis of ship collisions against reinforced concrete floaters of offshore wind turbines
Publication date :
October 2022
Journal title :
Ocean Engineering
ISSN :
0029-8018
Publisher :
Elsevier BV
Volume :
261
Pages :
111987
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Funding text :
The authors would like to thank the Fonds de la Recherche Scientifique (FNRS) for their support under the funding grant FRIA to the first author. Part of this work was performed within the framework of the West Atlantic Marine Energy Community (WEAMEC), granted by ICAM Engineering School, Pays de la Loire Region (France) and Europe (European Regional Development Fund), and within the COLLFOWT project from the Walloon Region (Plan Marshall-GreenWin-Belgium) 2021–2023.
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since 10 August 2022

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