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Improving Structural Safety of L-Type Flange Joint for Wind Towers

Author

Listed:
  • Thanh-Tuan Tran

    (Institute of Offshore Wind Energy, Kunsan National University, 558 Daehak-ro, Gunsan 54150, Jeollabuk-do, Republic of Korea
    Advanced Structural Engineering Laboratory, Department of Structural Engineering, Faculty of Civil Engineering, Ho Chi Minh City Open University, Ho Chi Minh City 700000, Vietnam)

  • Sangkyun Kang

    (Department of Mechanical Engineering, Kunsan National University, 558 Daehak-ro, Gunsan 54150, Jeollabuk-do, Republic of Korea)

  • Daeyong Lee

    (Institute of Offshore Wind Energy, Kunsan National University, 558 Daehak-ro, Gunsan 54150, Jeollabuk-do, Republic of Korea)

Abstract

This paper focuses on the design modification of L-type flange joint geometry in wind towers, aiming to enhance its structural safety. For this aim, current design issues of existing flange joints are discussed. The numerical simulations indicate that the threaded bolt and flange-to-shell junction are critical locations where failure may happen. Further discussion to improve structural safety is applied for an existing 5 MW flange joint. Through parametric studies, the major factors influencing ultimate strength are identified. The results show that the aspect ratio plays an important role in increasing the structural safety of the flange joints, while the width of the flange segment weakens the stiffness of the flange-to-shell junction. The findings in this study are expected to provide a useful reference for designing the L-type flange joints in practical engineering fields.

Suggested Citation

  • Thanh-Tuan Tran & Sangkyun Kang & Daeyong Lee, 2022. "Improving Structural Safety of L-Type Flange Joint for Wind Towers," Energies, MDPI, vol. 15(23), pages 1-14, November.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:23:p:8967-:d:985620
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    References listed on IDEAS

    as
    1. Thanh-Tuan Tran & Sangkyun Kang & Jang-Ho Lee & Daeyong Lee, 2021. "Directional Bending Performance of 4-Leg Jacket Substructure Supporting a 3MW Offshore Wind Turbine," Energies, MDPI, vol. 14(9), pages 1-17, May.
    2. Yang Ma & Pedro Martinez-Vazquez & Charalampos Baniotopoulos, 2020. "Buckling Analysis for Wind Turbine Tower Design: Thrust Load versus Compression Load Based on Energy Method," Energies, MDPI, vol. 13(20), pages 1-33, October.
    Full references (including those not matched with items on IDEAS)

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