Investigation of stiffness of small wind turbine blade based on vibration analysis technique. Issue 1 (February 2020)

• Record Type: Journal Article
• Authors: Chandgude, Nilesh; Gadhave, Nitin; Taware, Ganesh; Patil, Nitin
• Is Part Of: Wind engineering. Volume 44:Issue 1(2020)
• Page Start: 49
• Page End: 59
• Publication Date: 2020-02
• Subjects: Small wind turbine blades -- finite element analysis -- flap-wise natural frequencies -- mode shapes -- fast Fourier transform analyzer; Wind-pressure -- Periodicals; Winds -- Periodicals; Wind power -- Periodicals; Engineering meteorology -- Periodicals; Pression du vent; Vents; Énergie éolienne; Météorologie appliquée; Engineering meteorology; Wind power; Wind-pressure; Winds; Periodicals; 621.4505
• DOI: 10.1177/0309524X19849824
• Languages: English
• ISSNs: 0309-524X

Abstract

In this article, three small wind turbine blades of different materials were manufactured. Finite element analysis was carried out using finite element software ANSYS 14.5 on modeled blades of National Advisory Committee for Aeronautics 4412 airfoil profile. From finite element analysis, first, two flap-wise natural frequencies and mode shapes of three different blades are obtained. Experimental vibration analysis of manufactured blades was carried out using fast Fourier transform analyzer to find the first two flap-wise natural frequencies. Finally, the results obtained from the finite element analysis and experimental test of three blades are compared. Based on vibration analysis, we found that the natural frequency of glass fiber reinforced plastic blade reinforced with aluminum sheet metal (small) strips increases compared with the remaining blades. An increase in the natural frequency indicates an increase in the stiffness of blade.