Perturbation methods for the reliability analysis of wind-turbine blade failure due to flutter

Pourazarm, Pariya; Caracoglia, Luca; Lackner, Matthew A.; Modarres‐Sadeghi, Yahya

doi:10.1016/j.jweia.2016.07.011

Cited by 22 publications

(5 citation statements)

References 32 publications

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“…Hu et al [22] applied MCS to evaluate the fatigue reliability of composite wind turbines considering wind load uncertainty. Pourazarm et al [23] utilized MCS results to evaluate three reliability methods, FORM, SORM and the weighted average reliability method for the reliability analysis of wind turbine blade failure due to flutter. Other MCS applications for SRA of wind turbines are discussed in Section 4.…”

Section: Simulation Reliability Methodsmentioning

confidence: 99%

Structural Reliability Analysis of Wind Turbines: A Review

Jiang

Dong

et al. 2017

Energies

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Abstract:The paper presents a detailed review of the state-of-the-art research activities on structural reliability analysis of wind turbines between the 1990s and 2017. We describe the reliability methods including the first-and second-order reliability methods and the simulation reliability methods and show the procedure for and application areas of structural reliability analysis of wind turbines. Further, we critically review the various structural reliability studies on rotor blades, bottom-fixed support structures, floating systems and mechanical and electrical components. Finally, future applications of structural reliability methods to wind turbine designs are discussed.

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Section: Simulation Reliability Methodsmentioning

confidence: 99%

Structural Reliability Analysis of Wind Turbines: A Review

Jiang

Dong

et al. 2017

Energies

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“…The same argument is valid for individual renewable energy and aquaculture systems. For example, although the reliability of rotor blades, mooring systems, foundation and gearbox were extensively studied in the offshore wind farm literature, very few researchers examined the structural reliability of an offshore wind turbine as a whole ( Liu et al, 2019b ; Su and Kam, 2020 ; Pourazarm et al, 2016 ; Leong et al, 2019 ).…”

Section: Reliability Analysis Of the Integrated Systemmentioning

confidence: 99%

Reliability of multi-purpose offshore-facilities: Present status and future direction in Australia

Aryai

Abdussamie

Salehi

et al. 2021

Process Safety and Environmental Protection

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Sustainable use of the ocean for food and energy production is an emerging area of research in different countries around the world. This goal is pursued by the Australian aquaculture, offshore engineering and renewable energy industries, research organisations and the government through the “Blue Economy Cooperative Research Centre”. To address the challenges of offshore food and energy production, leveraging the benefits of co-location, vertical integration, infrastructure and shared services, will be enabled through the development of novel Multi-Purpose Offshore-Platforms (MPOP). The structural integrity of the designed systems when being deployed in the harsh offshore environment is one of the main challenges in developing the MPOPs. Employing structural reliability analysis methods for assessing the structural safety of the novel aquaculture-MPOPs comes with different limitations. This review aims at shedding light on these limitations and discusses the current status and future directions for structural reliability analysis of a novel aquaculture-MPOP considering Australia’s unique environment. To achieve this aim, challenges which exist at different stages of reliability assessment, from data collection and uncertainty quantification to load and structural modelling and reliability analysis implementation, are discussed. Furthermore, several solutions to these challenges are proposed based on the existing knowledge in other sectors, and particularly from the offshore oil and gas industry. Based on the identified gaps in the review process, potential areas for future research are introduced to enable a safer and more reliable operation of the MPOPs.

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“…Increasing the size of blades can improve the operational efficiency of wind turbines and also make them prone to aeroelastic instability problems 1 – 3 . Wind turbine blades are flexible blades with high aspect ratios, and blade flexibility can lead to bending torsion coupled flutter.…”

Section: Introductionmentioning

confidence: 99%

Study on coupled mode flutter parameters of large wind turbine blades

Zhuang,

Yuan

2024

Sci Rep

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As the size of wind turbine blades increases, the flexibility of the blades increases. In actual operation, airflow flow can cause aerodynamic elastic instability of the blade structure. Long blades may experience coupled mode flutter due to the bending torsion coupling effect, leading to blade failure. Based on Euler Bernoulli beam theory combined with Theodorsen non directional aerodynamic loads, a blade flutter characteristic equation is established through finite element method. Taking NREL 5 MW wind turbine blades as an example, analyze the influence of parameter changes in different regions of the blades on flutter characteristics. Research has found that paramter changes in the tip region of blade have the greatest impact on flutter characteristics. The vibration frequency shows an overall upward trend with the increase of waving stiffness and torsional stiffness. The flutter velocity of the three regions tends to stabilize as the bending stiffness decreases. The blade flutter speed increases with the increase of torsional stiffness. The radius of gyration is inversely proportional to the flutter frequency and flutter velocity. The impact of centroid offset on blade structure flutter frequency is minimal, but the centroid offset in the tip region has a greater impact on flutter velocity. Increasing the torsional frequency can prevent coupled mode flutter and provide a theoretical basis for blade flutter prevention design.

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Perturbation methods for the reliability analysis of wind-turbine blade failure due to flutter

Cited by 22 publications

References 32 publications

Structural Reliability Analysis of Wind Turbines: A Review

Structural Reliability Analysis of Wind Turbines: A Review

Reliability of multi-purpose offshore-facilities: Present status and future direction in Australia

Study on coupled mode flutter parameters of large wind turbine blades

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