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- W4384993417 abstract "Offshore wind turbines (OWTs) have undergone unprecedented development in recent years, and during their service life the control and mechanical systems faults have emerged one of the primary reasons to cause downtime of OWTs. This paper addresses the impact of mechanical faults in control systems on the structural damage risk under wind and wave loadings. Numerical simulations implemented by a combination of finite element simulation software are conducted to simulate nonlinear behaviors of support structural system with and without mechanical faults. Incremental dynamic analyses are carried out for three cases: (1) intact OWTs, (2) OWTs with only pitch system fault, and (3) OWTs with simultaneous faults at pitch and brake systems. The IDA results and structural damage risks of blades and support structural system under different cases are comprehensively analyzed and discussed. The results indicated that the pitch system fault results in a minor increase in the damage risk of OWTs in parked condition, while the presence of both pitch and brake systems fault or controller fault leads to a significant rise in the structural risk and even structural failure due to tower buckling and blade-tower strike." @default.
- W4384993417 created "2023-07-22" @default.
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- W4384993417 date "2023-10-01" @default.
- W4384993417 modified "2023-10-17" @default.
- W4384993417 title "Influence of mechanical faults in pitch, brake, controller systems on fragility of offshore wind turbine under aero-hydro loadings" @default.
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- W4384993417 doi "https://doi.org/10.1016/j.oceaneng.2023.115386" @default.
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