Fatigue Analysis of Monopile Foundation for Offshore Wind Turbine

Yi Syuan Li; Yi Mei Huang; Chih Kuang Lin

doi:10.4028/p-eLI74h

Fatigue Analysis of Monopile Foundation for Offshore Wind Turbine

Yi Syuan Li, Yi Mei Huang, Chih Kuang Lin

Department of Mechanical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

This study is aimed to estimate the fatigue damage ratio and to analyze the structural integrity for the monopile foundation of NREL 5-MW wind turbine. For simulating the uncertainty of environmental conditions, various random seeds, tide heights, and wave orientations are considered in the analyses. The Design Load Case 1.2 of IEC 61400-3 is applied in this study. A sequential approach is adopted to calculate the fatigue damage ratio. Firstly, the environmental conditions are implemented into the BLADED code. Secondly, ANSYS is employed to compute the stress/deformation using the output loading data from BLADED. Finally, the fatigue damage ratio is calculated by MATLAB using relevant fatigue theories. The results show that an increase in tide height causes a greater fatigue damage in the foundation. The maximum fatigue damage ratio is found in the case with a middle wind speed which is closer to the rated wind speed and is associated with the occurrence probability. The overall results demonstrate that the methodology developed in this study is applicable to the assessment of fatigue damage in the monopile foundation of OWT.

Original language	English
Title of host publication	4th International Conference on Machining, Materials and Mechanical Technologies, IC3MT 2022
Editors	Keiji Yamada, Yi Cheng Chen, Li-Gang Lin
Publisher	Trans Tech Publications Ltd
Pages	11-17
Number of pages	7
ISBN (Print)	9783036414966
DOIs	https://doi.org/10.4028/p-eLI74h
State	Published - 2024
Event	4th International Conference on Machining, Materials and Mechanical Technologies, IC3MT 2022 - Taipei, Taiwan Duration: 11 Nov 2022 → 14 Nov 2022

Publication series

Name	Advances in Science and Technology
Volume	139
ISSN (Print)	1662-8969
ISSN (Electronic)	1662-0356

Conference

Conference	4th International Conference on Machining, Materials and Mechanical Technologies, IC3MT 2022
Country/Territory	Taiwan
City	Taipei
Period	11/11/22 → 14/11/22

Keywords

Offshore wind turbine
fatigue damage
monopile foundation
sequential approach

Access to Document

10.4028/p-eLI74h

Cite this

Li, Y. S., Huang, Y. M., & Lin, C. K. (2024). Fatigue Analysis of Monopile Foundation for Offshore Wind Turbine. In K. Yamada, Y. C. Chen, & L.-G. Lin (Eds.), 4th International Conference on Machining, Materials and Mechanical Technologies, IC3MT 2022 (pp. 11-17). (Advances in Science and Technology; Vol. 139). Trans Tech Publications Ltd. https://doi.org/10.4028/p-eLI74h

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abstract = "This study is aimed to estimate the fatigue damage ratio and to analyze the structural integrity for the monopile foundation of NREL 5-MW wind turbine. For simulating the uncertainty of environmental conditions, various random seeds, tide heights, and wave orientations are considered in the analyses. The Design Load Case 1.2 of IEC 61400-3 is applied in this study. A sequential approach is adopted to calculate the fatigue damage ratio. Firstly, the environmental conditions are implemented into the BLADED code. Secondly, ANSYS is employed to compute the stress/deformation using the output loading data from BLADED. Finally, the fatigue damage ratio is calculated by MATLAB using relevant fatigue theories. The results show that an increase in tide height causes a greater fatigue damage in the foundation. The maximum fatigue damage ratio is found in the case with a middle wind speed which is closer to the rated wind speed and is associated with the occurrence probability. The overall results demonstrate that the methodology developed in this study is applicable to the assessment of fatigue damage in the monopile foundation of OWT.",

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Li, YS, Huang, YM & Lin, CK 2024, Fatigue Analysis of Monopile Foundation for Offshore Wind Turbine. in K Yamada, YC Chen & L-G Lin (eds), 4th International Conference on Machining, Materials and Mechanical Technologies, IC3MT 2022. Advances in Science and Technology, vol. 139, Trans Tech Publications Ltd, pp. 11-17, 4th International Conference on Machining, Materials and Mechanical Technologies, IC3MT 2022, Taipei, Taiwan, 11/11/22. https://doi.org/10.4028/p-eLI74h

Fatigue Analysis of Monopile Foundation for Offshore Wind Turbine. / Li, Yi Syuan; Huang, Yi Mei ; Lin, Chih Kuang.
4th International Conference on Machining, Materials and Mechanical Technologies, IC3MT 2022. ed. / Keiji Yamada; Yi Cheng Chen; Li-Gang Lin. Trans Tech Publications Ltd, 2024. p. 11-17 (Advances in Science and Technology; Vol. 139).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Li, Yi Syuan

AU - Huang, Yi Mei

AU - Lin, Chih Kuang

PY - 2024

Y1 - 2024

N2 - This study is aimed to estimate the fatigue damage ratio and to analyze the structural integrity for the monopile foundation of NREL 5-MW wind turbine. For simulating the uncertainty of environmental conditions, various random seeds, tide heights, and wave orientations are considered in the analyses. The Design Load Case 1.2 of IEC 61400-3 is applied in this study. A sequential approach is adopted to calculate the fatigue damage ratio. Firstly, the environmental conditions are implemented into the BLADED code. Secondly, ANSYS is employed to compute the stress/deformation using the output loading data from BLADED. Finally, the fatigue damage ratio is calculated by MATLAB using relevant fatigue theories. The results show that an increase in tide height causes a greater fatigue damage in the foundation. The maximum fatigue damage ratio is found in the case with a middle wind speed which is closer to the rated wind speed and is associated with the occurrence probability. The overall results demonstrate that the methodology developed in this study is applicable to the assessment of fatigue damage in the monopile foundation of OWT.

AB - This study is aimed to estimate the fatigue damage ratio and to analyze the structural integrity for the monopile foundation of NREL 5-MW wind turbine. For simulating the uncertainty of environmental conditions, various random seeds, tide heights, and wave orientations are considered in the analyses. The Design Load Case 1.2 of IEC 61400-3 is applied in this study. A sequential approach is adopted to calculate the fatigue damage ratio. Firstly, the environmental conditions are implemented into the BLADED code. Secondly, ANSYS is employed to compute the stress/deformation using the output loading data from BLADED. Finally, the fatigue damage ratio is calculated by MATLAB using relevant fatigue theories. The results show that an increase in tide height causes a greater fatigue damage in the foundation. The maximum fatigue damage ratio is found in the case with a middle wind speed which is closer to the rated wind speed and is associated with the occurrence probability. The overall results demonstrate that the methodology developed in this study is applicable to the assessment of fatigue damage in the monopile foundation of OWT.

KW - Offshore wind turbine

KW - fatigue damage

KW - monopile foundation

KW - sequential approach

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SN - 9783036414966

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BT - 4th International Conference on Machining, Materials and Mechanical Technologies, IC3MT 2022

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A2 - Chen, Yi Cheng

A2 - Lin, Li-Gang

PB - Trans Tech Publications Ltd

T2 - 4th International Conference on Machining, Materials and Mechanical Technologies, IC3MT 2022

Y2 - 11 November 2022 through 14 November 2022

ER -

Fatigue Analysis of Monopile Foundation for Offshore Wind Turbine

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