NDLI: Structural Modeling and Analysis of a Wave Energy Converter Applying Dynamical Substructuring Method

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Andrew, S. Zurkinden Damkilde, Lars Gao, Zhen Moan, Torgeir
Copyright Year	2013
Abstract	This paper deals with structural modeling and analysis of a wave energy converter. The device, called Wavestar, is a bottom fixed structure, located in a shallow water environment at the Danish Northwest coast. The analysis is concentrated on a single float and its structural arm which connects the WEC to a jackup structure. The wave energy converter is characterized by having an operational and survival mode. The survival mode drastically reduces the exposure to waves and therfore to the wave loads. Structural response analysis of the Wavestar arm is carried out in this study. Due to the relative stiff behavior of the arm the calculation can be reduced to a quasi-static analysis. The hydrodynamic and the structural analyses are thus performed separately. In order to reduce the computational time of the finite element calculation the main structure is modeled as a superelement. The structural detail, where the stress analysis is carried out, is connected with the superstructure by interface nodes. The analysis is conducted for two different control situations. Numerical results will be presented which can be further used to carry out fatigue analysis in which a more refined FE model is required to obtain the stress concentration factors.
Sponsorship	Ocean, Offshore and Arctic Engineering Division
File Format	PDF
ISBN	9780791855423
DOI	10.1115/OMAE2013-10854
Volume Number	Volume 8: Ocean Renewable Energy
Conference Proceedings	ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering
Language	English
Publisher Date	2013-06-09
Publisher Place	Nantes, France
Access Restriction	Subscribed
Subject Keyword	Water Stress concentration Structural response analysis Stress analysis (engineering) Fatigue analysis Modeling Waves Wave energy converters Stress Shorelines Finite element model Finite element analysis Jack-up drilling rigs Structural analysis
Content Type	Text
Resource Type	Article

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