Wind and Structures

  • 제20권5호
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  • Pages.609-622
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  • 2015
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  • 1226-6116(pISSN)
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  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Improved modeling of equivalent static loads on wind turbine towers

  • Gong, Kuangmin (National Wind Institute, Department of Civil and Environmental Engineering, Texas Tech University) ;
  • Chen, Xinzhong (National Wind Institute, Department of Civil and Environmental Engineering, Texas Tech University)
  • 투고 : 2014.10.10
  • 심사 : 2015.02.07
  • 발행 : 2015.05.25
⟨ 이전 논문 다음 논문 ⟩

초록

This study presents a dynamic response analysis of operational and parked wind turbines in order to gain better understanding of the roles of wind loads on turbine blades and tower in the generation of turbine response. The results show that the wind load on the tower has a negligible effect on the blade responses of both operational and parked turbines. Its effect on the tower response is also negligible for operational turbine, but is significant for parked turbine. The tower extreme responses due to the wind loads on blades and tower of parked turbine can be estimated separately and then combined for the estimation of total tower extreme response. In current wind turbine design practice, the tower extreme response due to the wind loads on blades is often represented as a static response under an equivalent static load in terms of a concentrated force and a moment at the tower top. This study presents an improved equivalent static load model with additional distributed inertial force on tower, and introduces the square-root-of-sum-square combination rule, which is shown to provide a better prediction of tower extreme response.

키워드

참고문헌

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피인용 문헌

  1. Buffeting response analysis of offshore wind turbines subjected to hurricanes vol.141, 2017, https://doi.org/10.1016/j.oceaneng.2017.06.005
  2. Aero-elastic coupled numerical analysis of small wind turbine-generator modelling vol.23, pp.6, 2016, https://doi.org/10.12989/was.2016.23.6.577
  3. Along-wind buffeting responses of wind turbines subjected to hurricanes considering unsteady aerodynamics of the tower vol.138, 2017, https://doi.org/10.1016/j.engstruct.2017.02.023
  4. Nonlinear response history analysis and collapse mode study of a wind turbine tower subjected to tropical cyclonic winds vol.25, pp.1, 2017, https://doi.org/10.12989/was.2017.25.1.079
  5. Wind design spectra for generalisation vol.30, pp.2, 2020, https://doi.org/10.12989/was.2020.30.2.155