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dc.contributor.authorThies, Philipp R.
dc.contributor.authorJohanning, Lars
dc.contributor.authorMcEvoy, Paul
dc.date.accessioned2014-10-30T15:02:34Z
dc.date.issued2014
dc.description.abstractOne of the main engineering challenges for floating marine renewable energy devices is the design of reliable, yet cost-effective mooring solutions for the harsh and dynamic marine environment. The mooring system must be able to withstand the ultimate limit state during storm conditions as well as the fatigue limit state due to the highly cyclic wave motions. This paper presents the performance and service simulation testing of a novel mooring tether that combines the material properties of elastomeric and thermoplastic elements. This allows to 'tailor' the load-extension curve to exhibit a low stiffness response for the expected normal, operating, load conditions and a high stiffness response for the envisaged extreme, storm, conditions. The experimental results demonstrate the working principle of the mooring element and show good agreement between the theoretical load extension curve and the conducted performance tests with a distinct hysteresis effect caused by the thermoplastic element. The hysteresis is dependant on the applied pre-tension and load cycle amplitude of the element and to a lesser extent on the cycle frequency. The relaxation of the elastomeric element is quantified, giving insight into the expected longterm performance of the tether. The demonstrated working principle and the possibility to tailor the mooring response allows engineers to load- and cost-optimise the mooring system of floating marine energy converters.en_GB
dc.description.sponsorshipEngineering and Physical Sciences Research Council (EPSRC)en_GB
dc.description.sponsorshipPeninsula Research Institute for Marine Renewable Energy (PRIMaRE)en_GB
dc.description.sponsorshipEuropean Regional Development Fund (ERDF)en_GB
dc.description.sponsorshipSouth West Regional Development Agency (SWRDA)en_GB
dc.identifier.citationIn press - available online 1 July 2014en_GB
dc.identifier.doi10.1016/j.ijome.2014.06.001
dc.identifier.urihttp://hdl.handle.net/10871/15776
dc.language.isoenen_GB
dc.publisherElsevieren_GB
dc.relation.urlhttp://dx.doi.org/10.1016/j.ijome.2014.06.001en_GB
dc.rightsEP/I027912/1en_GB
dc.subjectelastomeric mooringen_GB
dc.subjectcomponent testingen_GB
dc.subjectoffshore renewable energyen_GB
dc.subjectpeak loadsen_GB
dc.subjectreliabilityen_GB
dc.titleA novel mooring tether for peak load mitigation: Initial performance and service simulation testingen_GB
dc.typeArticleen_GB
dc.date.available2014-10-30T15:02:34Z
dc.identifier.issn2214-1669
exeter.article-numberIJOME-D-13-00004
dc.descriptionCopyright © 2014 Elsevier. NOTICE: this is the author’s version of a work that was accepted for publication in International Journal of Marine Energy. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. The ‘In press‘ version is available at http://dx.doi.org/10.1016/j.ijome.2014.06.001en_GB
dc.identifier.journalInternational Journal of Marine Energyen_GB


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