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3. Structural Strength Analysis and Fabrication of a Straight Blade of an H-Darrieus Wind Turbine.

Author

Ferroudji, Fateh and Khelifi, Cherif

Subjects
WIND turbines, WIND power, CONSTRUCTION costs, COMPUTER-aided design, FINITE element method
Abstract

Small H-Darrieus wind turbines have become popular in the wind power market because of their many advantages, which include simplicity of design, low construction costs, and they are thought to represent an adequate solution even in unconventional installation regions. The blade is generally considered as the most important component of the wind turbine system because it controls the efficiency of the turbine. The blade structure must be designed to support the difficult environmental conditions (e.g., wind, and snow) encountered during the operational life of the wind turbine. This current study uses three-dimensional (3D) modeling and structural strength analysis to fabricate two straight blades (aluminum and galvanized steel) for a small H-Darrieus wind turbine. The 3D modeling of the blade structure is performed using SolidWorks, a computer-aided design (CAD) software package, and the structural strength analysis uses the Finite Element Analysis (FEA) technique to identify the stiffness, resistance, and reliability of the blade structure. The simulation results obtained indicate that no structural failures are predicted for either of the two structures tested because the factors of safety are larger than one, and the all maximum deflections are within the allowable deformation limits for the materials. Manufacturing processes for the two structures are described. [ABSTRACT FROM AUTHOR]

Published
2021
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4. Investigation of the influence of orientation on the tensile properties of 3D printed samples with gyroid structure

Abstract

The article deals with experimental testing of a complex shape porous structure called Gyroid with a specific volume ratio Vr = 30 %. The main goal was to investigate the effect of orientation and location of samples on their resulting mechanical tensile properties. All samples were made of ABS-T silver material by 3D printing. Virtual sample models were designed using two different CAD software. Tensile samples were produced in two different directions perpendicular to each other. Five samples were made horizontally, so the vector of the loading tensile force lay in the plane of the printed layer. The other five samples were made vertically, so the sample was loaded perpendicular to the plane of the printed layer. Experimental testing and statistical processing have shown the orientation and direction of the printed layer. Experimental testing and statistical processing have shown that the orientation and direction of 3D printing have a significant impact on the resulting mechanical properties and quality of a component, as well as on the time of the 3D printing process itself. © 2022 IEEE.

Published
2022

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