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

Andrew Stephen Zurkinden, Lars Damkilde, Zhen Gao, Torgeir Moan

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

2 Citations (Scopus)

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.
Original languageEnglish
Title of host publicationASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering : Ocean Renewable Energy
Number of pages13
Volume8
PublisherAmerican Society of Mechanical Engineers
Publication date2013
ISBN (Print)978-0-7918-5542-3
DOIs
Publication statusPublished - 2013
EventASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering - Nantes, France
Duration: 9 Jun 201314 Jun 2013
Conference number: 32

Conference

ConferenceASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering
Number32
CountryFrance
CityNantes
Period09/06/201314/06/2013

Keywords

  • Structural Modeling
  • Wave Energy Converter
  • Dynamical Substructuring Method
  • Wavestar

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    Zurkinden, A. S., Damkilde, L., Gao, Z., & Moan, T. (2013). Structural Modeling and Analysis of a Wave Energy Converter Applying Dynamical Substructuring Method. In ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering: Ocean Renewable Energy (Vol. 8). American Society of Mechanical Engineers. https://doi.org/10.1115/OMAE2013-10854