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mdpi.com article

Stability Analysis of Wind Turbine Blades Based on Different Structural Models

https://www.mdpi.com/2077-1312/11/6/1106

In order to better simulate the actual working conditions of wind turbines more realistically, this paper adopts the two-way fluid–structure coupling method to study the NREL 5 MW wind turbine, considering the blade coupling deformation and equivalent stress and strain distribution of the blades with different internal structures under different working conditions. The results show that the maximum equivalent stress and strain distribution of the beam–structure wind turbine blade was near the leading edge of the blade. The maximum equivalent stress and strain distribution of the shell structure wind turbine blade was near the leading edge of the blade root, and the dangerous area is obvious but smaller than that of the beam-type wind turbine. The coupled deformation of a wind turbine model with a shell structure blade with a web is significantly reduced, and the equivalent stress and strain distribution of the skin is similar to that of the shell structure, but the numerical value and the maximum equivalent stress distribution area are significantly smaller.

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encardio.com article

Coupled vs. Uncoupled Offshore Wind Turbine Analysis

https://www.encardio.com/blog/coupled-vs-uncoupled-offshore-wind-turbine-anal…

Coupled analysis offers a more detailed and integrated approach. In this method, the turbine, tower, and foundation are modeled as a single system.

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sciopen.com article

Fluid-structure coupling analysis of 200 kW vertical axis wind turbine blade

https://www.sciopen.com/article/10.11975/j.issn.1002-6819.202411065

Specifically, a systematic calculation was performed on the structural deformations and stress concentration that generated by the blades of the 200 kW VAWT under the aerodynamic forces in the flow field at wind speeds of 10, 12, and 20 m/s and the cut-out wind speed of 25 m/s. Several aspects were covered, including the aerodynamic characteristics of the wind turbine rotor and a single blade under different wind speeds, as well as the pressure distribution of the cross-sectional airfoil at different azimuth angles, the deformation and stress distribution of a single blade in the wind turbine at different wind speeds, and the variation in the deformations and stresses that generated by the blades under the aerodynamic forces in the flow field with the azimuth angle. The distribution pattern was also explored for the deformations and stresses of the blade along the blade span direction and the specific positions of stress concentration.

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asmedigitalcollection.asme.org article

Design Studies for Twist-Coupled Wind Turbine Blades

https://asmedigitalcollection.asme.org/WIND/proceedings/WIND2003/75944/324/30…

The results indicate that carbon fibers can be used to produce twist-coupled designs with comparable deflections, strains and buckling loads.

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