Finite Element Analysis of Composite Offshore Wind Turbine Blades Under Operating Conditions

Summary In northern regions, wind turbines are affected by the formation of ice on the surface of their structures, which usually occurs on moving blades, resulting in a significant decrease in aerodynamic performance and then the output power tends to reduce. This research evaluates the mechanical behavior and damage of the proposed composite blade structure under icing conditions. A comparative evaluation was carried out considering three ice configurations and three blade positions. The results are then examined and analysed. During this study, the blade in service was subjected to three different critical loads. A numerical simulation is adopted using finite element method (FEM) with ABAQUS software to localize damage in the composite wind turbine blade. The method developed is based on the failure criteria of HASHIN to detect failure modes in large structures and to identify the most sensitive zones. Major damage appeared in the transition region and was the principal reason for the composite blade failure. Furthermore, greater strength and stiffness were found with Carbon (CC) fibers blade designs, whereas configuration 3 was found to be the best one, and the optimal blade position was when the ice structure was placed vertically.

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“…The composite lamination of the blade is also composed of foam core material (SKINFOAM) whose mechanical properties are indicated in Table 3 33 …”

Section: Conception Of Wind Turbinementioning

confidence: 99%

“…Taking into account the gluing between the shear webs and the blade, Figure 8. An isotropic material is added to the structure, its properties are reported in Table 3 33 …”

Section: Conception Of Wind Turbinementioning

confidence: 99%

Numerical investigation of ice accretion on an offshore composite wind turbine under critical loads

Lagdani¹,

Tarfaoui

Nachtane

et al. 2020

Int J Energy Res

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“…It has a characteristic that favors its massive penetration in the urban environment because solar radiation is received everywhere with levels of intensity that allow the production of electricity (Lopez-Rey et al, 2019), being determinant for this market advance (Rosa et al, 2018). Wind energy is clean, abundant, inexhaustible, and environmentally preferable (Oyedepo, Adaramola, & Paul, 2012) and refers to the development of wind farms near beaches, rivers, or lakes to produce electricity from the wind (Tarfaoui, Nachtane, & Boudounit, 2019). Finally, biomass energy is clean and renewable energy and is also considered an alternative to fossil fuels (Liu, Feng, & He, 2019), as it can contribute significantly to reduce the environmental impacts associated with using waste from other processes for generation, such as the use of residues from olive oil production (Ducom et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

A Scientometric Approach to Analyze Scientific Development on Renewable Energy Sources

Schaefer

Siluk

Baierle

et al. 2020

Journal of Data and Information Science

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PurposeThis paper aims to point out the scientific development and research density of renewable energy sources such as photovoltaic, wind, and biomass, using a mix of computational tools. Based on this, it was possible to verify the existence of new research trends and opportunities in a macro view regarding management, performance evaluation, and decision-making in renewable energy generation systems and installations.Design/methodology/approachA scientometric approach was used based on a research protocol to retrieve papers from the Scopus database, and through four scientometric questions, to analyze each area. Software such as the Science Mapping Analysis Software Tool (SciMAT) and Sci2 Tool were used to map the science development and density.FindingsThe scientific development of renewable energy areas is highlighted, pointing out research opportunities regarding management, studies on costs and investments, systemic diagnosis, and performance evaluation for decision-making in businesses in these areas.Research limitationsThis paper was limited to the articles indexed in the Scopus database and by the questions used to analyze the scientific development of renewable energy areas.Practical implicationsThe results show the need for a managerial perspective in businesses related to renewable energy sources at the managerial, technical, and operational levels, including performance evaluation, assertive decision making, and adequate use of technical and financial resources.Originality/valueThis paper shows that there is a research field to be explored, with gaps to fill and further research to be carried out in this area. Besides, this paper can serve as a basis for other studies and research in other areas and domains.

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“…During the analysis, the strength constraint imposed was the Tsai-Wu failure criterion in order to determine the optimum structural design for the spar caps and webs of two wind turbine blades. Yeh and Wang (2017) used the finite element analysis software Ansys to perform a stress analysis of a 5 MW composite wind turbine blade, where they found that the largest combined load occurred at a 0 • pitch angle, and the stress and displacement are the greatest when the wind blade is located at 120 • angular position from its highest vertex. Zhu and Rustamov (2013) performed a structural analysis, using the finite element method, to evaluate a 750 kW wind turbine blade under various load conditions.…”

Section: Introductionmentioning

confidence: 99%

Development of a numerical model of a novel leading edge protection component for wind turbine blades

et al. 2020

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Abstract. As the world shifts to using renewable sources of energy, wind energy has been established as one of the leading forms of renewable energy. However, as wind turbines get increasingly larger, new challenges within the design, manufacture and operation of the turbine are presented. One such challenge is leading edge erosion on wind turbine blades. With larger wind turbine blades, tip speeds begin to reach over 300 km h−1. As water droplets impact along the leading edge of the blade, rain erosion begins to occur, increasing maintenance costs and reducing the design life of the blade. In response to this, a new leading edge protection component (LEP) for offshore for wind turbine blades is being developed, which is manufactured from thermoplastic polyurethane. In this paper, an advanced finite element analysis (FEA) model of this new leading edge protection component has been developed. Within this study, the FEA model has been validated against experimental trials at demonstrator level, comparing the deflection and strains during testing, and was found to be in good agreement. The model is then applied to a full-scale wind turbine blade and is then modelled with the LEP bonded onto the blade's leading edge and compared to previously performed experimental trials, where the results were found to be well aligned when comparing the deflections of the blade. The methodology used to develop the FEA model can be applied to other wind blade designs in order to incorporate the new leading edge protection component to eliminate the risk of rain erosion and improve the sustainability of wind turbine blade manufacture while increasing the service life of the blade.

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Finite Element Analysis of Composite Offshore Wind Turbine Blades Under Operating Conditions

Cited by 30 publications

References 16 publications

Numerical investigation of ice accretion on an offshore composite wind turbine under critical loads

Numerical investigation of ice accretion on an offshore composite wind turbine under critical loads

A Scientometric Approach to Analyze Scientific Development on Renewable Energy Sources

Development of a numerical model of a novel leading edge protection component for wind turbine blades

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