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Introducing non-rigid body structural dynamics to WEC-Sim

Name: Introducing non-rigid body structural dynamics to WEC-Sim
Keywords: Coupled analysis, WEC-Sim, Wave Energy Converter, Renewable Energy, Sustainability and the Environment, TJ807-830, Structural analysis, Ocean Engineering, Load analysis, Oceanography, TC1501-1800

descriptionPublicationkeyboard_double_arrow_right Article 10 Sep 2020European Wave and Tidal Energy ConferenceInternational Marine Energy Journal, volume 3, pages 55-63 (eissn: 2631-5548,

Authors: Joshua Scriven; P. Laporte-Weywada; J. Cruz;

doi: 10.36688/imej.3.55-63

Introducing non-rigid body structural dynamics to WEC-Sim

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Abstract

This paper describes the development of a structural dynamics add-on to WEC-Sim, an open-source code dedicated to the dynamic analysis of Wave Energy Converters (WECs). When calculating the dynamic response of a body, WEC-Sim by default uses a rigid body dynamics approach. Such an approach ignores the potential effects of structural deformation on the WEC, which can in turn affect e.g. the distributed loads across the WEC and / or the individual (point) load sources that depend on the dynamic response of the WEC. Following a similar approach to tools used in the offshore wind industry, a structural dynamic add-on was developed using Code_Aster as the Finite Element (FE) solver to enable coupled hydro-elastic, time-domain analysis. The add-on was developed and tested using an example Oscillating Wave Surge Converter (OWSC) WEC model, currently being developed as part of the H2020 MegaRoller project. In the examples studied, the inclusion of structural dynamics is shown to affect the estimated peak Power Take-Off (PTO) loads, with variations in PTO force of over 10% being observed when structural dynamics are considered in the analysis. © 2020, European Wave and Tidal Energy Conference. All rights reserved.

Keywords

Coupled analysis, WEC-Sim, Wave Energy Converter, Renewable Energy, Sustainability and the Environment, TJ807-830, Structural analysis, Ocean Engineering, Load analysis, Oceanography, TC1501-1800, Renewable energy sources

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visibility	views	81
download	downloads	85

	citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	0
	popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.	Average
	influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	Average
	impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.	Average