Finite element frequency analysis of offshore wind turbine structure under soil and structure interaction

Hsuan Teh Hu, Chi Yang, Ding Sheng Yeh, Shyne Ruey Liaw, Chu Kuan Lin, Yu Ming Liu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In recent years, nations over the world were looking for alternative energy sources to reduce global warming caused by traditional fossil fuel burning. Renewable energy sources like wind power have great opportunities in this direction, because of low pollution. The offshore wind turbine (OWT) structures are frequently subjected to dynamic loads during operation. Hence, knowledge of their dynamic characteristics such as their natural frequencies, is essential to avoid damaging resonances. In this study, the Abaqus finite element program is used to calculate the natural frequency of a jacket-type offshore wind turbine supporting structure. During the analysis, the nonlinear behavior has also been considered. Four models: the finite element model, the hybrid finite-infinite element model with the soil material simulated by infinite element, the soil spring model adopting the soil equation proposed by the American Petroleum Institute, and the equivalent soil spring model were utilized in this study. The nonlinear behavior of the soil-pile interaction and the natural frequency of the OWT structure were thoroughly analyzed.

Original languageEnglish
Title of host publicationProceedings of the 26th International Ocean and Polar Engineering Conference, ISOPE 2016
EditorsAlan M. Wang, Jin S. Chung, Ted Kokkinis, Michael Muskulus
PublisherInternational Society of Offshore and Polar Engineers
Pages60-67
Number of pages8
ISBN (Electronic)9781880653883
Publication statusPublished - 2016 Jan 1
Event26th Annual International Ocean and Polar Engineering Conference, ISOPE 2016 - Rhodes, Greece
Duration: 2016 Jun 262016 Jul 1

Publication series

NameProceedings of the International Offshore and Polar Engineering Conference
Volume2016-January
ISSN (Print)1098-6189
ISSN (Electronic)1555-1792

Other

Other26th Annual International Ocean and Polar Engineering Conference, ISOPE 2016
CountryGreece
CityRhodes
Period16-06-2616-07-01

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Ocean Engineering
  • Mechanical Engineering

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  • Cite this

    Hu, H. T., Yang, C., Yeh, D. S., Liaw, S. R., Lin, C. K., & Liu, Y. M. (2016). Finite element frequency analysis of offshore wind turbine structure under soil and structure interaction. In A. M. Wang, J. S. Chung, T. Kokkinis, & M. Muskulus (Eds.), Proceedings of the 26th International Ocean and Polar Engineering Conference, ISOPE 2016 (pp. 60-67). (Proceedings of the International Offshore and Polar Engineering Conference; Vol. 2016-January). International Society of Offshore and Polar Engineers.