Dynamic Analysis of Tapered Thin-Walled Beams Using Spectral Finite Element Method

Table 2

Comparison of modal frequencies of the tapered wind turbine blade.

Order	First mode	Second mode	Third mode	Fourth mode
Mode shape	Flapwise	Edgewise	Flapwise	Flapwise
SFE (Hz)	1.060	2.392	3.960	5.131
ANSYS (Hz)	1.016	2.240	4.299	5.559
Error (%)	4.32	6.78	8.56	8.34