Next Article in Journal
Risk-Limiting Scheduling of Optimal Non-Renewable Power Generation for Systems with Uncertain Power Generation and Load Demand
Next Article in Special Issue
Structural Dynamic Analysis of Semi-Submersible Floating Vertical Axis Wind Turbines
Previous Article in Journal / Special Issue
Influence of Icing on the Modal Behavior of Wind Turbine Blades
Article Menu
Issue 11 (November) cover image

Export Article

Open AccessArticle
Energies 2016, 9(11), 870; doi:10.3390/en9110870

Operational Modal Analysis of a Spar-Type Floating Platform Using Frequency Domain Decomposition Method

1
Natural Ocean Engineering Laboratory (NOEL), Mediterranea University of Reggio Calabria, Reggio Calabria 89122, Italy
2
DICEAM Department, Mediterranea University of Reggio Calabria, Reggio Calabria 89122, Italy
3
Energy and Power Department, Cranfield University, Cranfield MK43 0AL, UK
4
Tecnalia Research & Innovation, Energy and Environment Division, Bilbao 48160, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: Rupp Carriveau
Received: 21 July 2016 / Revised: 19 September 2016 / Accepted: 17 October 2016 / Published: 26 October 2016
(This article belongs to the Special Issue Modeling and Simulation for Wind Turbine Loads Analysis)
View Full-Text   |   Download PDF [1236 KB, uploaded 26 October 2016]   |  

Abstract

System identification of offshore floating platforms is usually performed by testing small-scale models in wave tanks, where controlled conditions, such as still water for free decay tests, regular and irregular wave loading can be represented. However, this approach may result in constraints on model dimensions, testing time, and costs of the experimental activity. For such reasons, intermediate-scale field modelling of offshore floating structures may become an interesting as well as cost-effective alternative in a near future. Clearly, since the open sea is not a controlled environment, traditional system identification may become challenging and less precise. In this paper, a new approach based on Frequency Domain Decomposition (FDD) method for Operational Modal Analysis is proposed and validated against numerical simulations in ANSYS AQWA v.16.0 on a simple spar-type structure. The results obtained match well with numerical predictions, showing that this new approach, opportunely coupled with more traditional wave tanks techniques, proves to be very promising to perform field-site identification of the model structures. View Full-Text
Keywords: Frequency Domain Decomposition; output-only system identification; damping of offshore structures Frequency Domain Decomposition; output-only system identification; damping of offshore structures
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Ruzzo, C.; Failla, G.; Collu, M.; Nava, V.; Fiamma, V.; Arena, F. Operational Modal Analysis of a Spar-Type Floating Platform Using Frequency Domain Decomposition Method. Energies 2016, 9, 870.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top