Finite element analysis of the flange with different fillet radius in tubular wind tower

• Published in: Materials today : proceedings Vol. 68; pp. 2551 - 2559
• Main Authors: Rakshith Gowda, DS, Bharath, P, Ranjith, K, Rishi, JP, Shrinivasa, D
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 2022
• Subjects: Campbell diagrams; FEA; Fillet radius; Flange; Modal analysis; Wind tower failure; Campbell diagrams; Flange; FEA; Modal analysis; Fillet radius; Wind tower failure
• ISSN: 2214-7853; 2214-7853
• DOI: 10.1016/j.matpr.2022.09.371

Today’s modern world has more demand for electricity to perform most of the activities. In this regard, wind turbines are used to convert the wind energy into electrical power, where turbines are mounted at the top of the tower called wind tower. To meet the high power generation demand, the wind energy towers will have to become taller because winds are stronger at higher altitudes. In the present, work Modal analysis of the wind tower is done using ANSYS, and Campbell diagram is plotted to check the frequency of resonance between the tower natural frequency and the natural frequency of the rotating blades. Considering the different fillet radius in the flanges, the critical conditions are simulated under the same loading condition. Finite Element Analysis (FEA) results show that by increasing the fillet radius the Equivalent stress, Maximum principle stress and, Maximum shear stress decreases. The safety of the tower is ensured through the Campbell diagram where the excitation frequency of any blade is not crossing the exciter box.