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Numerical and experimental comparison between two different blade configurations of a wind generator

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journal contribution
posted on 05.02.2016, 13:15 authored by Andrea Alaimo, Francesco Lo Iacono, Giacomo Navarra, Giovanni Pipitone
This paper presents a comparison between the structural behaviour of a wind generator with straight blades and a composite prototype of a wind generator with helical blades. Numerical structural analyses are performed by means of FEM models by using ANSYS MechanicalTM software package. Furthermore, laboratory dynamic experimental tests are carried out on real scale specimens of the two wind generator configurations in order to find their modal properties in terms of natural frequencies and modal shapes. The results of the experimental campaign are then used to update the numerical models by minimizing an objective function. Total stresses and deformations of the two wind generator configurations, coming from the updated numerical models, are evaluated and compared to quantitatively point out the improvement of the structural behaviour obtained by the use of composite materials.

History

School

  • Architecture, Building and Civil Engineering

Published in

Composite Structures

Volume

136

Pages

526 - 537

Citation

ALAIMO, A. ... et al., 2016. Numerical and experimental comparison between two different blade configurations of a wind generator. Composite Structures, 136, pp. 526 - 537.

Publisher

© Elsevier Ltd.

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2015-11-03

Notes

This article was published by Elsevier in the journal Composite Structures and the definitive version is available at: http://dx.doi.org/10.1016/j.compstruct.2015.10.042

ISSN

0263-8223

Language

en