Fatigue Life Analysis of Longitudinal Welding Seam for Wind Turbine Tower

doi:10.1007/s12204-020-2171-6

Journal of Shanghai Jiao Tong University (Science) ›› 2020, Vol. 25 ›› Issue (2): 261-265.doi: 10.1007/s12204-020-2171-6

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Fatigue Life Analysis of Longitudinal Welding Seam for Wind Turbine Tower

GUO Wenqiang (郭文强), SUN Pengwen (孙鹏文), NIU Lei (牛磊), WANG Zongtao (王宗涛)

(1. School of Mechanical Engineering, Inner Mongolia University of Technology, Hohhot 010051, China; 2. School of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, China; 3. Research Institute, Beiqi Foton Motor Co., Ltd., Beijing 102206, China)
(1. School of Mechanical Engineering, Inner Mongolia University of Technology, Hohhot 010051, China; 2. School of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, China; 3. Research Institute, Beiqi Foton Motor Co., Ltd., Beijing 102206, China)

Online:2020-04-01 Published:2020-04-01
Contact: SUN Pengwen (孙鹏文) E-mail:pwsun@imut.edu.cn

Abstract

Abstract: Tower is an important fundamental component of large-scale wind turbines. The fatigue performance of the tower welded part directly affects the running safety and reliability of wind turbines. A fatigue life predicting method for the longitudinal welding seam of the tower is proposed in this paper. Under the precondition of satisfying the limit strength, the time series stress of each working condition is obtained by DIN18800-4 section stress calculation. Combined with the rain-flow counting method and the Miner linear cumulative damage theory, the fatigue life of the tower longitudinal weld is predicted. The results show that the tower structure meets the design requirement, and the feasibility and effectiveness of the method are verified.

Key words: longitudinal welding| fatigue life prediction| limit strength analysi| wind turbine tower

摘要： Tower is an important fundamental component of large-scale wind turbines. The fatigue performance of the tower welded part directly affects the running safety and reliability of wind turbines. A fatigue life predicting method for the longitudinal welding seam of the tower is proposed in this paper. Under the precondition of satisfying the limit strength, the time series stress of each working condition is obtained by DIN18800-4 section stress calculation. Combined with the rain-flow counting method and the Miner linear cumulative damage theory, the fatigue life of the tower longitudinal weld is predicted. The results show that the tower structure meets the design requirement, and the feasibility and effectiveness of the method are verified.

关键词: longitudinal welding| fatigue life prediction| limit strength analysi| wind turbine tower

CLC Number:

TK 83

GUO Wenqiang (郭文强), SUN Pengwen (孙鹏文), NIU Lei (牛磊), WANG Zongtao (王宗涛). Fatigue Life Analysis of Longitudinal Welding Seam for Wind Turbine Tower[J]. Journal of Shanghai Jiao Tong University (Science), 2020, 25(2): 261-265.

References 11

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Fatigue Life Analysis of Longitudinal Welding Seam for Wind Turbine Tower

Fatigue Life Analysis of Longitudinal Welding Seam for Wind Turbine Tower

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