Numerical investigation of a large composite wind turbine with different spar profiles using finite-element method

Tarfaoui, Mostapha; Pradillon, Jean‐Yves; Shah, Owaisur Rahman

doi:10.1051/lhb/20150052

Cited by 4 publications

(2 citation statements)

References 7 publications

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“…Based on standard GL Wind2003 (Germanischer Lloyd Wind Energy GMBH, 2005), the equation ( 1) represents a condition that must be satisfied in order to avoid the resonance phenomenon that can lead to structural failure (Tarfaoui et al, 2015):…”

Section: Resonancementioning

confidence: 99%

Modal analysis of an iced offshore composite wind turbine blade

Lagdani¹,

Tarfaoui

Nachtane

et al. 2021

Wind Engineering

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In the far north, low temperatures and atmospheric icing are a major danger for the safe operation of wind turbines. It can cause several problems in fatigue loads, the balance of the rotor and aerodynamics. With the aim of improving the rigidity of the wind turbine blade, composite materials are currently being used. A numerical work aims to evaluate the effect of ice on composite blades and to determine the most adequate material under icing conditions. Different ice thicknesses are considered in the lower part of the blade. In this paper, modal analysis is performed to obtain the natural frequencies and corresponding mode shapes of the structure. This analysis is elaborated using the finite element method (FEM) computer program through ABAQUS software. The results have laid that the natural frequencies of the blade varied according to the material and thickness of ice and that there is no resonance phenomenon.

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Section: Resonancementioning

confidence: 99%

Modal analysis of an iced offshore composite wind turbine blade

Lagdani¹,

Tarfaoui

Nachtane

et al. 2021

Wind Engineering

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“…To obtain the optimal design of the wind turbine blade, the work presented by several authors [37][38][39][40] was used as a starting point, which provides an overview of the commonly used models, techniques, tools, and experimental approaches applied to increase the efficiency of the wind turbines, with particular emphasis on approaches used to design wind turbine blades.…”

Section: Blade Designmentioning

confidence: 99%

Evaluation of Basalt Fibers on Wind Turbine Blades through Finite Element Analysis

Garcia

Vargas

Acuña

et al. 2019

Advances in Materials Science and Engineering

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Here we use finite element analysis to determine the suitability of basalt fiber as a substitute for E-glass in structural applications, which would improve the cost effectiveness of small wind turbine blades. Five NACA (National Advisory Committee for Aeronautics) profiles were evaluated to select the optimum shape for the wind operation conditions. To obtain the wind load pressure distribution over the blade, a computational aerodynamic analysis by CFD (computational fluid dynamics) was performed based on the blade’s design and operating conditions. Material properties and mechanical tests were carried out to obtain the fiber volume fraction, density, Young’s modulus, shear modulus, and Poisson relation of polymeric matrix composites made using basalt and fiberglass. The obtained wind loads and material properties were used on a FEM (finite element model) analysis to evaluate the structural behavior of the blade under normal and critical operating conditions. Both fibers meet the structural requirements under normal operating conditions. We detected a reduction of 4% in the blade stress when basalt fibers are used instead of glass fibers, and a reduction of 68% in the total deformation for a critical load case of 40 m/s was obtained when using basalt fibers, which met the structural requirements and maximum power generation required for this wind turbine design.

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