Stress Analysis of Vertical Axis Wind Turbine Based on Fluid-Structure Coupling
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Abstract:
Upon the analysis of fluid-solid coupling, the forces on the blades and spindle of the building integration wind turbine were discussed. Based on an actual project, the one-way fluid-structure coupling method in the structure analysis software ANSYS Workbench was used to calculate and analyze the static stresses of the blades and spindle under the wind speed of 10 m/s and 50 m/s. The results showed that the maximum static stress of the wind turbine blades occurs at the connection between the blades and spindle under different working conditions, and the maximum static stress increases with the increasing of wind speed. The maximum static stress is far less than the yield limit of material, thus it will not destroy the wind turbine blades and spindle structure. The connection between the blades and spindle has the stress concentration phenomenon, and the thickness of the connection area can be increased to prevent fatigue failure.
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