Communications Internationales

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    Steady-State and Vibration Analyses of Wind Turbine Blades Based on Numerical Approach Using Different Materials
    (American Institute of Physics, 2025) Deghoum, Khalil; Al-Tamimi, Adnan Naji Jameel; Gherbi, Mohammed T.; Mohammed M.N.; Abed, Azher M.; Abdullah, Oday I.; Boukhari, Ali; Hamidatou, Smail
    The wind turbine system relies heavily on its blades, which are crucial components. Modern wind turbine blades are constructed using composite materials to achieve a balance between high stiffness and low weight. This research paper aimed to enhance the structure of a 5-kW small HAWT by developing a new three-dimension finite element model. The study involved the optimization of the blade structure using four different composite materials [Carbon fiber-reinforced plastic (CFRP), Glass Fiber Reinforced Polymer (GFRP), poly-para-phenylene terephthalamide (Kevlar), and high-performance glass fiber (S-glass)] to improve and give the suitable material for the blade. The research presented the blade's modal shapes and maximum deflection when using each material, with all calculations conducted under a wind speed of 10 m/s. The findings revealed that the S-glass material resulted in the largest deflection (8.22 mm), while the CFRP material exhibited the lowest deflection (2.01 mm). Additionally, the modal analysis of the first six natural frequencies indicated that the blade made from CFRP material possessed the highest natural frequency, followed by Kevlar material and GFRP material. Conversely, the blade made from S-glass material had the lowest natural frequency