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RSM method is widely used in engineering applications [19, 23, 24].Sections 2 and 3 of this paper present the structural dynamics identification, which was performed by means of experimental modal analysis.Finite element (FE) model updating has become an important tool used in structural dynamics [9, 10].

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The coupling causes the feathering blade to twist under the bending load and as a result decreases the angle of attack.

Based on sensitivity analysis, set of model parameters was selected for the model updating process.

Design of experiment and response surface method was implemented to find values of model parameters yielding results closest to the experimental.

In [8] an overview of the statistical and modal analysis experiments on the original and modified blade section is presented.

In this paper the updating of the modified wind turbine blade section’s finite element model using experimental modal analysis is presented.

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