Static and dynamic analysis of wind turbine blades using the finite element method

Chazly, Nihad M. El

doi:10.1016/0960-1481(93)90078-u

Cited by 19 publications

(6 citation statements)

References 8 publications

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“…The deflection of the blade that is predicted in the FEA model (seen in Fig. 11) agrees well with the results from the experimental trials performed in Fagan et al (2017), which can be seen in Fig. 12.…”

Section: Fea Model Analysissupporting

confidence: 78%

“…In order to ensure the accuracy of the FEA model and the wind turbine blade set-up, the results (blade deflection) from the FEA model are compared to the experimental trials performed by Fagan et al (2017) for the same blade. The loading used in the experimental trials was defined from the maximum expected wind loading on the blade in operation, and this same loading is used within the analysis presented in this study.…”

Section: Fea Model Analysismentioning

confidence: 99%

“…Comparison of the deflections from the FEA model of the full-scale wind turbine blade under the defined loading along the length of the blade with and without the LEP bonded and the experimental results(Fagan et al, 2017).…”

mentioning

confidence: 99%

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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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Section: Fea Model Analysissupporting

confidence: 78%

Section: Fea Model Analysismentioning

confidence: 99%

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

et al. 2020

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“…The twisting of the blade tip increases the strength of the blade as the stiffness increases. Also, it is found that by increasing the twist angle and decreasing the eigenvalue, this results in twisting decreases the probability of reaching the resonant frequency of the blade [26].…”

Section: Bladementioning

confidence: 99%

A Continuum Based Three-Dimensional Modeling of Wind Turbine Blades

Bayoumy

Nada

Megahed

2012

Journal of Computational and Nonlinear Dynamics

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Accurate modeling of large wind turbine blades is an extremely challenging problem. This is due to their tremendous geometric complexity and the turbulent and unpredictable conditions in which they operate. In this paper, a continuum based three dimensional finite element model of an elastic wind turbine blade is derived using the absolute nodal coordinates formulation (ANCF). This formulation is very suitable for modeling of largedeformation, large-rotation structures like wind turbine blades. An efficient model of six thin plate elements is proposed for such blades with non-uniform, and twisted nature. Furthermore, a mapping procedure to construct the ANCF model of NACA (National Advisory Committee for Aeronautics) wind turbine blades airfoils is established to mesh the geometry of a real turbine blade. The complex shape of such blades is approximated using an absolute nodal coordinate thin plate element, to take the blades tapering and twist into account. Three numerical examples are presented to show the transient response of the wind turbine blades due to gravitational/aerodynamics forces. The simulation results are compared with those obtained using ANSYS code with a good agreement.

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“…The finite element method has been used in many researches. Patel et al [11] and El Chazly [12] used finite element analysis to predict static and dynamic performance of wind turbine blades. Kong et al [13] studied the fatigue lifetime of Epoxy E-Glass wind turbine blades by performing a 3D finite element analysis.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study Between Epoxy S-Glass UD And Epoxy Carbon UD For Their Use As Manufacturing Materials For Wind Turbine Blades

Hasan¹,

Nazha²

2020

IJMSC

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The majority of failure cases may occur because of the wrong selection of inappropriate material in the manufacture of wind turbine blades. Composites are used to increase reliability and reduce wind turbine manufacturing costs. Therefore, this research focuses on comparing the use of Epoxy S-Glass UD and Epoxy Carbon UD as manufacturing materials for wind turbine blades using 3D finite element analysis; to find out which of these materials have the best performance for its use as a manufacturing material for wind turbine blades. The distribution of Von Mises stresses in wind turbine blade models was investigated using Epoxy S-Glass UD and Epoxy Carbon UD under the wind loads that affect the blade of the turbine. The results showed that the value of the maximum stresses in the epoxy glass model was 3.495 × 107 Pa, while this value was in the epoxy carbon model 4.0494 × 107 Pa. As for the value of the minimum stresses, it was in the epoxy glass model 7431.8 Pa, while the value in another material model 17323 Pa. Therefore, it is not recommended to use Epoxy Carbon UD as a manufacturing material for wind turbine blades, but it is recommended to use Epoxy S-Glass UD, which reduces induced stresses and thus to prolong its lifespan.

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Static and dynamic analysis of wind turbine blades using the finite element method

Cited by 19 publications

References 8 publications

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

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

A Continuum Based Three-Dimensional Modeling of Wind Turbine Blades

A Comparative Study Between Epoxy S-Glass UD And Epoxy Carbon UD For Their Use As Manufacturing Materials For Wind Turbine Blades

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