Structural Analysis of a Small Wind Turbine Blade Subjected to Gyroscopic Load

Costa, M S P da; Clausen, Philip

doi:10.1088/1742-6596/1618/4/042006

Cited by 3 publications

(4 citation statements)

References 4 publications

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“…To improve the structure of the wind turbine blade, it will discuss the comparison between the results of the FE model with the experimental results (Da Costa et al 2020) and(Costa et al 2017). In order to achieve this task, three magnitudes of static loads/ masses (3.3, 6, 8.3 kg) are fixed near the tip area to determine the maximum deflection of the blade tip.…”

Section: Study-state and Aerodynamic Loadmentioning

confidence: 99%

“…The intensity of the loads varies with the wind speed. In the experimental study, (Costa et al 2017;Da Costa et al 2020) fabricated a wind turbine blade shell of GFRP and filled it with H80 foam with three loads/ masses (3.3, 6, and 8.3 kg) that were fixed near the blade tip to obtain the maximum blade deflection. In their study, the FE model was made from GFRP and CFRP to optimize the blade structure and the H80 foam change by the spar cap part to reduce the mass and study the deflection behavior of the blade.…”

Section: Deflection Of the Blade Under The Static Loadsmentioning

confidence: 99%

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An investigation of the Steady-State and Fatigue Problems of a Small Wind Turbine Blade Based on the Interactive Design Approach

Deghoum

Gherbi

Jweeg³

et al. 2022

Int. J. Renew. Energy Dev.

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A wind turbine blade is an essential system of wind energy production. During the operation of the blade, it is subjected to loads resulting from the impact of the wind on the surface of the blade. This leads to appear large deflections and high fatigue stresses in the structure of blades. In this paper, a 5 kW horizontal axis wind turbine blade model is designed and optimized using a new MATLAB code based on blade element momentum (BEM) theory.The aerodynamic shape of the blade has been improved compared with the initial design, the wind turbine power has been increased by 7% and the power coefficient has been increased by 8%. The finite Element Method was used to calculate the loads applied to the blade based on Computational Fluid Dynamics (CFD) and BEM theory.High agreements were obtained between the results of both approaches (CFD and BEM).The ANSYS software was also used to simulate and optimize the structure of the blade by applying variable static loads 3.3, 6, and 8.3 kg and compared the results with the experimental results. It was reduced the maximum deflectionswith 37%, 42.85%, and 42.61% when using CFRP material and 4.5%, 15.45%, and 16.19% for GFRP material that corresponds to the applied forces. Based on the results, the mass of the optimized model decreased by 47.86% for GFRP and 71.24% for CFRP. IEC 61400.2 standard was used to estimate thefatigue loads, damage, blade life prediction, and verify blade safety usinga Simplified Load Model(SLM) and FAST software. It was found that the blade will be safe under extreme wind loads, and the lifetime of the wind blade (GFRP) is 5.5 years and 10.25 years,according to SLM and FAST software, respectively. At the same time, the lifetime of the wind blade (CFRP)is more than 20 years, according to the two applied methods.

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Section: Study-state and Aerodynamic Loadmentioning

confidence: 99%

Section: Deflection Of the Blade Under The Static Loadsmentioning

confidence: 99%

An investigation of the Steady-State and Fatigue Problems of a Small Wind Turbine Blade Based on the Interactive Design Approach

Deghoum

Gherbi

Jweeg³

et al. 2022

Int. J. Renew. Energy Dev.

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“…Some researchers [ 20 ] studied the problem of delamination of T-type joints between the cover and the stiffening elements inside the blade. According to other researchers [ 21 , 22 , 23 , 24 , 25 , 26 , 27 ], the delamination mechanism consists of separation of plies from each other under loading. The risks of delamination occurrence consist of increasing the failure area due to interlaminar normal and shear stresses, leading to the sudden collapse of the entire structure [ 28 , 29 , 30 ].…”

Section: Introductionmentioning

confidence: 99%

Prediction of the Damage Effect on Fiberglass-Reinforced Polymer Matrix Composites for Wind Turbine Blades

2022

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The structure of wind turbine blades (WTBs) is characterized by complex geometry and materials that must resist various loading over a long period. Because of the components’ exposure to highly aggressive environmental conditions, the blade material suffers cracks, delamination, or even ruptures. The prediction of the damage effects on the mechanical behavior of WTBs, using finite element analysis, is very useful for design optimization, manufacturing processes, and for monitoring the health integrity of WTBs. This paper focuses on the sensitivity analysis of the effects of the delamination degree of fiberglass-reinforced polymer composites in the structure of wind turbine blades. Using finite element analysis, the composite was modeled as a laminated structure with five plies (0/45/90/45/0) and investigated regarding the stress states around the damaged areas. Thus, the normal and shear stresses corresponding to each element of delaminated areas were extracted from each ply of the composites. It was observed that the maximum values of normal and shear stresses occurred in relation to the orientation of the composite layer. Tensile stresses were developed along the WTB with maximum values in the upper and lower plies (Ply 1 and Ply 5), while the maximum tensile stresses were reached in the perpendicular direction (on the thickness of the composite), in the median area of the thickness, compared to the outer layers where compression stresses were obtained. Taking into account the delamination cases, there was a sinuous-type fluctuation of the shear stress distribution in relation to the thickness of the composite and the orientation of the layer.

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“…Using finite element analysis, the structural response of a small composite wind turbine blade subjected to gyroscopic load was studied by Costa et al [9]. As a case study, a 5 kW small wind turbine blade was used for aerogenesis.…”

Section: Introductionmentioning

confidence: 99%

Simulation of Glass Fiber Reinforced Polypropylene Nanocomposites for Small Wind Turbine Blades

et al. 2021

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This study aims to evaluate the effect of functionalized multi-walled carbon nanotubes (MWCNTs) on the performance of glass fiber (GF)-reinforced polypropylene (PP) for wind turbine blades. Support for theoretical blade movement of horizontal axis wind turbines (HAWTs), simulation, and analysis were performed with the Ansys computer package to gain insight into the durability of polypropylene-chopped E-glass for application in turbine blades under aerodynamic, gravitational, and centrifugal loads. Typically, polymer nanocomposites are used for small-scale wind turbine systems, such as for residential applications. Mechanical and physical properties of material composites including tensile and melt flow indices were determined. Surface morphology of polypropylene-chopped E-glass fiber and functionalized MWCNTs nanocomposites showed good distribution of dispersed phase. The effect of fiber loading on the mechanical properties of the PP nanocomposites was investigated in order to obtain the optimum composite composition and processing conditions for manufacturing wind turbine blades. The results show that adding MWCNTs to glass fiber-reinforced PP composites has a substantial influence on deflection reduction and adding them to chopped-polypropylene E-glass has a significant effect on reducing the bias estimated by finite element analysis.

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Structural Analysis of a Small Wind Turbine Blade Subjected to Gyroscopic Load

Cited by 3 publications

References 4 publications

An investigation of the Steady-State and Fatigue Problems of a Small Wind Turbine Blade Based on the Interactive Design Approach

An investigation of the Steady-State and Fatigue Problems of a Small Wind Turbine Blade Based on the Interactive Design Approach

Prediction of the Damage Effect on Fiberglass-Reinforced Polymer Matrix Composites for Wind Turbine Blades

Simulation of Glass Fiber Reinforced Polypropylene Nanocomposites for Small Wind Turbine Blades

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