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Assessing the performance durability of elastomeric moorings: Assembly investigations enhanced by sub-component tests ArchiMer
Gordelier, T.; Parish, D.; Thies, P. R.; Weller, S.; Davies, Peter; Le Gac, Pierre-yves; Johanning, L..
The growing marine renewable energy sector has led to a demand for increasingly compliant mooring systems. In response, several innovative mooring tethers have been proposed demonstrating potential customisation to the stiffness profile and reduced peak mooring loads. Many of these novel systems utilise materials in a unique application within the challenging marine environment and their long term durability remains to be proven. This paper presents a multifaceted investigation into the durability of a novel polyester mooring tether with an elastomeric core. Laboratory based functionality tests are repeated on tether assemblies following a 6 month sea deployment. Results show a 45% average increase in dynamic axial stiffness. This is supported by high...
Tipo: Text Palavras-chave: Marine energy; Mooring; Elastomer; Durability; EPDM; Component testing.
Ano: 2018 URL: http://archimer.ifremer.fr/doc/00434/54605/55987.pdf
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Numerical model validation for mooring systems: Method and application for wave energy converters ArchiMer
Harnois, V.; Weller, Sam D.; Johanning, L.; Thies, P. R.; Le Boulluec, Marc; Le Roux, Dominique; Soule, Veronique; Ohana, Jeremy.
The design of wave energy mooring systems is challenging: overdesign incurs a significant cost penalty, underdesign may lead to a premature failure and incorrect design could reduce the power production. Consequently, compliant mooring systems are being developed for wave energy applications. This paper presents tank test results for a scale model of the buoy and mooring used at the SouthWest Mooring Test Facility (SWMTF), an offshore facility developed to conduct long-term sea trials for wave energy device moorings. A compliant three leg catenary mooring system using Nylon ropes in the water column is investigated. Preliminary static, quasi-static, decay, regular and irregular wave tests were conducted on the 1:5 scale model, using the Ifremer basin in...
Tipo: Text Palavras-chave: Wave energy converter; Tank tests; Numerical model; Highly dynamic mooring system; Fibre rope.
Ano: 2015 URL: https://archimer.ifremer.fr/doc/00233/34375/35785.pdf
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