초록

Coupled dynamic analysis between wind turbines and substructures in fixed and floating offshore wind turbine structures is currently a challenge. The 3D finite element analysis software X-SEA coupled with the OpenFAST program is therefore developed and discussed in this paper. The current version of X-SEA includes the results of extensive research and development based on the finite element program XFINAS, which was originally developed in Imperial College London. The X-SEA solution ranges from simple static to highly advanced dynamic analysis applied to the offshore structures. Autocad is used as pre- and post-processor of X-SEA. The X-SEA program is specialized in offshore projects, including nonlinear structural analysis, dynamic response analysis due to wind, current, waves, and seismic loads, impact dynamics and collapse analysis. X-SEA can also carry out fatigue analysis for tubular steel structures in frequency and time domain. Furthermore, the code checks of steel members with several offshore standards: AISC, API, DNV, Euro-code, ISO and NORSOK, are available in X-SEA for the design of offshore structures. The program has been validated with a standard commercial package called the Structural Analysis Computer System. The theoretical background of X-SEA software is also summarized.

키워드

해상풍력, 고정식 및 부유식 해상풍력, 해석소프트웨어, X-SEA, OpenFAST

참고문헌(18)open

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  2. [인터넷자료] / X-SEA

  3. [인터넷자료] / https://www.youtube.com/watch?v=WpYoMbO3leQ

  4. [학술대회] Kim, K. D. / 2019 / Development of offshore structural analysis software X-SEA coupled with FAST / ASME 2019 38th International Conference on Ocean : 9

  5. [인터넷자료] / GH- BLADED

  6. [보고서] NREL / 2019 / X-SEA Verification Report

  7. [보고서] MaREI / 2019 / X-SEA Verification Report

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  9. [학술지] Kim, B. J. / 2018 / Three-dimensional Analysis of Prestressed Concrete Offshore Wind Turbine Structure Under Environmental and 5-MW Turbine Loads / Journal of Marine Science and Application 17 (4) : 625 ~ 637

  10. [학술지] Plodpradit, P. / 2019 / Tripod-Supported Offshore Wind Turbines: Modal and Coupled Analysis and Parametric Study using X-SEA and FAST / Journal of Marine Science and Engineering 7 (6) : 181

  11. [학술지] Plodpradit, P. / 2019 / Coupled analysis of offshore wind turbine jacket structures with pile-soil-structure interaction using FAST v8and X-SEA / Appl. Sci. 9 (8) : 1633

  12. [학위논문] Morison J. R. / 1950 / The force distribution exerted by surface wave on piles, University of California

  13. [보고서] MacCamy, R. C. / 1954 / Wave forces on piles: a diffraction theory : 1 ~ 17

  14. [학술지] Kim, B. J. / 2018 / Three-dimensional Analysis of Prestressed Concrete Offshore Wind Turbine Structure Under Environmental and 5-MW Turbine Loads / Journal of Marine Science and Application 17 : 625 ~ 637

  15. [학술지] Wilson, E. L. / 1982 / Dynamic analysis by direct superposition of Ritz vectors / Earthquake Engineering &Structural Dynamics 10 (6) : 813 ~ 821

  16. [인터넷자료] / SACS

  17. [인터넷자료] / WAMIT

  18. [인터넷자료] / NEMOH