Mooring System
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Enhancement the Fatigue Life of Floating Breakwater Mooring System Using Tuned Liquid Column Damper
Abstract Safety is a key design criterion for floating structures. A high rate of mooring accidents has been reported over the past decades. Preventing mooring line failure is a key design objective for floating breakwater systems. The mooring system comprises sets of mooring lines anchored to the seabed. These components are exposed to highly cyclic nonline
Lat. Am. j. solids struct.. Publicado em: 22/08/2019
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2. A Model Analysis for the Design and Deployment of an Eulerian Sediment Trap Mooring Array in a Western Boundary Upwelling System from Southeast Brazil
Esta contribuição dirigiu-se aos procedimentos adotados para o desenho e configuração de uma linha de fundeio eulariana com armadilhas de sedimentação, a qual foi instalada na borda da plataforma (zm ≈ 140 m) a 80 km de Cabo Frio, SE-Brasil (23°S). O local foi sujeito à dinâmica entre a Água Tropical (AT) da Corrente do Brasil (BC), intrusões da
An. Acad. Bras. Ciênc.. Publicado em: 2014-06
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3. Estudo de viabilidade do sistema de ancoragem de uma unidade flutuante de produção e armazenamento \"FPSO\" acoplada a um sistema de completação seca \"TLWP\". / Mooring system feasibility study of a floating production and storage unit \"FPSO\" coupled to a dry tree system \"TLWP\".
The oil and gas production in Brazilian fields are commonly found in deep water and situated far away from the coast, reaching distances of more than 100 km as, for example, in the Campos Basin or Santos Basin. Due to the heavy oil and lack of pipeline infrastructure found in these fields, not only subsea equipments that must support high pressure but also l
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/03/2011
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4. Estudo de VIM - Movimentos Induzidos por Vórtices em plataformas do tipo monocoluna: abordagem numérico-experimental e impactos no sistema de amarração. / VIM study - Vortex Induced Motions in monocolumn type platforms: numeric-experimental approach and impact on mooring system.
The vortex induced vibration VIV is a main subject studied in the offshore engineering, having its name adapted to VIM by the occurrence in Spar platforms in the Gulf of México. As the first monocolumn unit, the Sevan Piranema, was in Northeast Brazil in 2007, VIM occurrence in cylindrical units like this was questioned, having the mooring lines design dime
Publicado em: 2011
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5. Modelo hidro-elástico para simular as vibrações induzidas por vórtices em cabos submersos. / Hidro-elastic model to stimulate vortex-induced vibrations in submerged cables.
The present work proposes a qualitative numerical study of a hydro-elastic model in order to simulate vortex-induced vibrations in submerged cables. The model is composed of a coupled system of equations describing the structure and the fluid. The structure is modeled through a classical elastic oscillator and discretized using a lumped mass approach. The fl
Publicado em: 2009
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6. Methodology of structural analysis and post-processing from offshore system simulations. / Metodologia de análise estrutural e pós-processamento a partir de simulações do comportamento de sistemas oceânicos.
This work presents a methodology developed to treat the hydrodynamic analysis of an offshore system conjointly with its structural analysis; the same methodology also allows for combined post-processing of data. Programming routines were created so as to enable the use of the time series of the forces present at the risers and mooring lines as input data for
Publicado em: 2007
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7. RESISTÊNCIA À TRAÇÃO DE UM SISTEMA DE ANCORAGEM EMBUTIDO EM CONCRETO SUJEITO A CARGA DE IMPACTO / TENSILE STRENGTH OF A CONCRETE ANCHORING SUBJECTED TO IMPACT LOAD
This work investigates the strength of a concrete anchor system constituted of headed studs embedded in concrete subjected to impact tension load. The main variable was the loading rate which varied from a minimum of 0,015 kN/s (static) to a maximum of 54885 kN/s. The anchor system was designed so that the failure was governed by concrete cone breakout. Elev
Publicado em: 2006
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8. ANÁLISE DINÂMICA DE LINHAS DE ANCORAGEM COM ADAPTAÇÃO NO TEMPO E SUBCICLAGEM / DYNAMIC ANALYSIS OF MOORING LINES USING TIME ADAPTIVITY AND SUBCYCLING
In general, the computational cost required for dynamic simulations of structural problems is very high. In certain situations, the system must provide immediate answers so that important decisions can be made based on them. In other cases, several simulations of the same problem, varying only a few parameters, must be performed. Such contexts are very commo
Publicado em: 2001
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9. Otimização e automatização do projeto de sistemas de ancoragem de plataformas semi-submersiveis
There are a few programs around the world used for determining the main aspects of the Mooring Design of Semi-submersible platforms. These programs hold a worldwide acknowledgement and their results are actually reliable. But they require many runs to get a solution that comply with the Classification Society requirements. So, the expended time to carry out
Publicado em: 1993
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10. Estudo dos movimentos de uma plataforma semi-submersivel atraves da simulação no dominio do tempo
In this work a time domain procedure is developed to simulate the motions of a semisubmersible subjected to wave, wind and current. The effects of wind and current are obtained dividing the semisubmersible surface in panels. The effects of mooring system and riser are also quasi-staticaly considered. The hidrodynamic reaction is determined by the integral co
Publicado em: 1991