Abstract
There are abundant wind resources in cold regions. Therefore, it is essential to systematically study some icing situation of wind turbines blades (especially the blade tip area) to reduce the loss of wind turbines blades caused by faults, which has important significance to the development and utilization of superior wind power resources in alpine regions in the future. An S8025 airfoil blade was used as this research object to research this influence of different loads on this typical vibration performance of a wind turbines with blade tip icing. The results display that the tip area of these wind turbines will be covered with ice because of the small chord length. Blade tip icing results in an increase in blade mass, blade stiffness, blade torsional stiffness, and other parameters, and the low-order vibration frequencies decreases while the high-order vibration frequencies increases. The centrifugal force load significantly affects the vibration performance of a wind turbines with blade tip icing. The results can be used as a reference to improve the deicing of wind turbines blade tips.
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