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Research Article

Numerical evaluation of the mechanical behavior of an FPSO mooring system fairleads foundations due to maximum environmental loads

Kauê Louro Martins1, Vinícius Torres Pinto1, Luiz Alberto Oliveira Rocha2, Elizaldo Domingues dos Santos1, Liércio André Isoldi1

1Graduate Program in Ocean Engineering (PPGEO), Federal University of Rio Grande – FURG, Rio Grande, RS, Brazil.                                                                                                                                                               2Graduate Program in Mechanical Engineering, University of Vale do Rio dos Sinos – UNISINOS, Porto Alegre, RS, Brazil

Keywords

Abstract



Mooring System;

Fairleads;

Fairlead Foundations; 

Brackets;

Maximum environmental loads

.

The present work aimed to study the mechanical behavior of the fairlead support brackets of a FPSO (Floating, Production, Storage and Offloading) mooring system located in the Campos Basin (22°58’14’’S, 42°01’36’’O to 20°19’08’’S, 40°20’16’’O) using numerical simulation. For an inextensible anchor line, the maximum stresses from the environmental loading of waves, winds and currents were determined. The stresses acting on the anchor line were applied to the centroid of the fairlead and the reactions to these, generated in the brackets, were applied in the internal region of the hole that receives the fairlead support axis. The brackets are fixed to the side of the hull by 3 vertical and 1 horizontal points. Their initial proposed geometry was based on models currently in operation on platforms P66 and P67 (Petrobras platforms capable of stocking 1.67 mi oil barrels each, with 288 m of length overall, they are designed to anchor at depth of 2200 m). The numerical simulation process was performed using the Mechanical APDL tool of ANSYS software with a computational model composed by three-dimensional (3D) finite elements. The results indicated that for the proposed geometry the mechanical integrity of the brackets is assured, considering that von Mises maximum stresses did not extrapolate the yielding stress limit of the steel. © 2019 MIM Research Group. All rights reserved.

LATEST News


15/03/2021 Collaboration for ICWET'21: Editorial Board of our journal and Organizing Committee of the6th International Conference on Welding Technologies and Exibition (ICWET’21) have agreed to collaborate. Extended versions of the selected papers from the conference will be published in our journal. For more see Events.


11/02/2021 Collaboration for ULIBTK 2021: Editorial Board of our journal and Organizing Committee of the 23. Congress on Thermal Science and Technology (ULIBTK 2021) have agreed to collaborate. Extended versions of the selected papers from the conference will be published in our journal. For more see Events.


31/12/2020 Most Cited Award: 

According to the Editorial Board evaluation, the paper authored by Nelson Batista, Rui Melicio, Victor Mendes entitled as “Darrieus vertical axis wind turbines: methodology to study the self-start capabilities considering symmetric and asymmetric airfoils" is awarded the 2020 Most Cited Paper Award of Research on Engineering Structures and Materials (RESM).


31/12/2020 Best Paper Award:

According to the Advisory Board decision, the paper authored by Marcelo Mesquita do Amaral, Matheus Wanglon Ferreira and Mauro de Vasconcellos Real entitled as “A simplified method for analysis of reinforced concrete beams exposed to fire situation” is awarded the 2020 Best Paper Award of Research on Engineering Structures and Materials (RESM).


02/11/2020 Indexed by SCOPUS: We are informed that our journal is accepted to be included in the SCOPUS Index. See news for more info.


(More details of the news may be given in the News section)


For more see News...

LATEST AWARDS


2020 Most Cited Paper Award:

The paper authored by Nelson Batista, Rui Melicio, Victor Mendes entitled as “Darrieus vertical axis wind turbines: methodology to study the self-start capabilities considering symmetric and asymmetric airfoils" is awarded the


2020 Best Paper Award:

The paper authored by Ahsen Ünal, Işıl Özer, Melek Erol Taygun, Sadriye Küçükbayrak entitled as “Fabrication and in-vitro evaluation of copper doped bioactive glass/polymer composite scaffolds for bone tissue engineering” is awarded the 


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Last Update:

06.07.2021

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