Evaluation of finite element analysis techniques applied to a floating offshore wind turbine

Almherigh, MAM 2005, Evaluation of finite element analysis techniques applied to a floating offshore wind turbine , PhD thesis, University of Salford.

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The work presented here is a research thesis of the Ph. D programme in The School of Computing, Science & Engineering at The University of Salford UK. The work presents the evaluation of using explicit finite element techniques for structural non-linear dynamic analysis of a floating offshore wind turbine used for harnessing wind kinetic energy and converting it to electricity. The LS-DYNA3D explicit finite element analysis programme is used in performing the evaluation of the analysis and in creating a full scale model typical to the one evaluated. The developed model (case study) is a 1.4MW power rated floating 3 blades turbine elevated at 46.5 m above main sea level a top a tripod lattice steel tower firmly resting on a moored floating concrete hull buoy, positioned on a concrete circular disk. The mooring cables supporting the floating units in the multi unit farm are designed to share seabed anchoring piles for economic reasons. The model is intended for use in moderately deep waters of up to 500m. The State-of-the-art report is presented concerning wind energy technology, floating offshore wind structures and important features of the LS-DYNA3D code. The theoretical basics for service loads experienced by the floating wind turbine are explored and the loads are quantified. The Verification and validation work on developed small models is presented to ensure confidence in the developed full scale model and the evaluation of the finite element techniques which may be applied to such structures. Development of full scale model, material properties, loads and boundary conditions are presented. Recommendations both for this model and future development are accordingly made.

Item Type: Thesis (PhD)
Contributors: Weekes, L (Supervisor)
Themes: Subjects / Themes > T Technology > TJ Mechanical engineering and machinery
Subjects / Themes > T Technology > TK Electrical engineering. Electronics Nuclear engineering
Subjects / Themes > T Technology > TD Environmental technology. Sanitary engineering
Subjects / Themes > T Technology > TA Engineering (General). Civil engineering (General)
Built and Human Environment
Subjects outside of the University Themes
Schools: Schools > School of Computing, Science and Engineering
Depositing User: Institutional Repository
Date Deposited: 19 Aug 2009 12:57
Last Modified: 19 Oct 2021 13:39
URI: http://usir.salford.ac.uk/id/eprint/2216

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