Articles | Volume 4, issue 1
Wind Energ. Sci., 4, 57–69, 2019
https://doi.org/10.5194/wes-4-57-2019
Wind Energ. Sci., 4, 57–69, 2019
https://doi.org/10.5194/wes-4-57-2019
Research article
28 Jan 2019
Research article | 28 Jan 2019

Determination of natural frequencies and mode shapes of a wind turbine rotor blade using Timoshenko beam elements

Evgueni Stanoev and Sudhanva Kusuma Chandrashekhara

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Latest update: 27 Nov 2022
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Short summary
In the frame of a multi-body simulation of a wind turbine, the lowest rotor blade eigenmodes are used to describe their elastic deformations. In this paper, a finite Timoshenko beam element is proposed based on the transfer matrix method. The element stiffness and mass matrices are derived by numerical integration of the differential equations of motion. A numerical example with generic rotor blade data demonstrates the performance of the method in comparison with FAST/ADAMS software results.