Evaluating frequency domain methods for fatigue analysis of fixed jacket type offshore platform

Nia, Hadi Moghaddam; Aghakouchak, Ali Akbar

doi:10.1016/j.oceaneng.2021.110233

Cited by 4 publications

(1 citation statement)

References 34 publications

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“…Many researchers have addressed the structural damage identification, localization, quantification, and remaining useful life (RUL) estimation. 6,7 However, due to variable environmental loads, the dynamic response of the jacket structure is subject to uncertainties, which significantly increases the SHM difficulty. As a result, the structural damage identification, localization, quantification, and RUL estimation are often not performed in a unified framework, which limits the SHM for the jacket structures.…”

Section: Introductionmentioning

confidence: 99%

Condition-based structural health monitoring of offshore wind jacket structures: Opportunities, challenges, and perspectives

Leng

Gardoni

Wang

et al. 2023

Structural Health Monitoring

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Structural health monitoring (SHM) has been recognized as a useful tool for safety management and risk reduction of offshore wind farms. In complex offshore environment, jacket structures of offshore wind turbines are prone to damages due to corrosion and fatigue. Effective SHM on jacket structures can substantially reduce their operation risk and costs. This work reviews the latest progress on the SHM of offshore wind jacket structures. The achievements in the structural damage identification, location, quantification, and remaining useful life (RUL) estimation are respectively introduced in detail, and existing challenges are discussed. Possible solutions to the challenges using the Digital Twin (DT) technology are put forward. The DT is able to mirror a real jacket structure into a virtual model, and Bayesian updating can refresh the virtual model parameters in real-time to keep consistency between virtual model and physical structure; then, just-in-time SHM can be carried out for jacket structures by performing damage detection, location, quantification, and RUL estimation using the virtual model. As a result, the DT may provide engineers and researchers a practicable tool for safety monitoring and risk reduction of fixed foundation offshore wind structures.

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Section: Introductionmentioning

confidence: 99%

Condition-based structural health monitoring of offshore wind jacket structures: Opportunities, challenges, and perspectives

Leng

Gardoni

Wang

et al. 2023

Structural Health Monitoring

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Fatigue Analysis Method of Steel Containment of Floating Nuclear Power Plant

Liu

Fan

Song

et al. 2023

Springer Proceedings in Physics

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Floating nuclear power plant (FNPP) is a movable nuclear power plant built on the floating platform, which can provide clean and stable power for remote coastal areas, and are currently a hot research topic in the field of nuclear power. The steel containment is located in the reactor compartment of the FNPP and it is an important safety guarantee structure. Fatigue and fracture have been an important issue for ship and offshore structures for a long time. Fatigue failure of containment will have serious consequences.In order to research the fatigue life analysis method of steel containment of the first FNPP in China, the paper adopts miner linear cumulative damage theory and spectral analysis method, based on the American Society of Mechanical Engineers (ASME) standards and relevant standards of China Classification Society (CCS), and uses AQWA to analyze Wave load of FNPP. The hydrodynamic calculation results are imported into finite element model to analyze the structural response of each point of containment, and calibrate the transfer function data of each key point by using the linear system theory and regular wave periodic evaluation method. The fatigue analysis of each point is carried out according to the transfer function and the wave dispersion diagram drawn by the forty years monitoring sea conditions of the working sea area of the FNPP. The result shows that the fatigue life of steel containment is superior and meets the service requirements.

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A method to reduce the sampling variability of time-domain fatigue life by optimizing parameters in Monte Carlo simulations

Sun,

Qiu,

et al. 2024

Probabilistic Engineering Mechanics

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Evaluating frequency domain methods for fatigue analysis of fixed jacket type offshore platform

Cited by 4 publications

References 34 publications

Condition-based structural health monitoring of offshore wind jacket structures: Opportunities, challenges, and perspectives

Condition-based structural health monitoring of offshore wind jacket structures: Opportunities, challenges, and perspectives

Fatigue Analysis Method of Steel Containment of Floating Nuclear Power Plant

A method to reduce the sampling variability of time-domain fatigue life by optimizing parameters in Monte Carlo simulations

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