Research Papers

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

[+] Author and Article Information
M. Tarfaoui

ENSTA Bretagne,
Brest F-29200, France;
Nanomaterials Laboratory,
University of Dayton,
Dayton, OH 45469-0168
e-mail: Mostapha.tarfaoui@ensta-bretagne.fr

M. Nachtane

ENSTA Bretagne,
Brest F-29200, France;
Laboratory for Renewable Energy and Dynamic Systems,
Casablanca 20100, Morocco
e-mail: mourad.nachtane@ensta-bretagne.org

H. Boudounit

ENSTA Bretagne,
Brest F-29200, France;
Laboratory for Renewable Energy and Dynamic Systems,
Casablanca 20100, Morocco

1Corresponding author.

Contributed by the Heat Transfer Division of ASME for publication in the Journal of Thermal Science and Engineering Applications. Manuscript received August 21, 2018; final manuscript received November 25, 2018; published online June 6, 2019. Assoc. Editor: Ziad Saghir.

J. Thermal Sci. Eng. Appl 12(1), 011001 (Jun 06, 2019) (11 pages) Paper No: TSEA-18-1414; doi: 10.1115/1.4042123 History: Received August 21, 2018; Accepted November 25, 2018

World energy demand has increased immediately and is expected to continue to grow in the foreseeable future. Therefore, an overall change of energy consumption continuously from fossil fuels to renewable energy sources, and low service and maintenance price are the benefits of using renewable energies such as using wind turbines as an electricity generator. In this context, offshore wind power refers to the development of wind parks in bodies of water to produce electricity from wind. Better wind speeds are available offshore compared to on land, so offshore wind power's contribution in terms of electricity supplied is higher. However, these structures are very susceptible to degradation of their mechanical properties considering various hostile loads. The scope of this work is the study of the damage noticed in full-scale 48 m fiberglass composite blades for offshore wind turbine. In this paper, the most advanced features currently available in finite element (FE) abaqus/Implicit have been employed to simulate the response of blades for a sound knowledge of the mechanical behavior of the structures and then localize the susceptible sections.

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Fig. 1

Schematic SN curves for various industrial components [9]

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Fig. 2

Some failed wind turbine blades during their service [20]

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Fig. 3

Different airfoils along the blade

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Fig. 4

Evolution of coefficient of performance as a function of wind speed

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Fig. 5

Evolution of the power generated as a function of wind speed

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Fig. 7

Conception of the blade parts: (a) two shape of spars, (b) adhesive, and (c) extrados and intrados

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Fig. 8

Example of stratification and Laminate by sections: (a) ROOT zone and (b) TIP zone

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Fig. 9

Mesh of models: (a) model 1: S4R, (b) model 2: S4R+C3D8R, and (c) model 3: S4R

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Fig. 10

Distribution of the mass of the blade

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Fig. 11

Location of load application along the blade length

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Fig. 14

Centrifugal loads

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Fig. 15

Damage of wind turbine blades

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Fig. 16

Comparative curves of the models, bending

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Fig. 17

Damage of wind turbine blades, buckling

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Fig. 18

Comparative curves of the models, buckling

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Fig. 19

Damage of wind turbine blades, gravity

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Fig. 20

Comparative curves of the models, gravity

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Fig. 21

Damage of wind turbine blades, centrifugal loads

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Fig. 22

Comparative curves of the models



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