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Wind Energy Science The interactive open-access journal of the European Academy of Wind Energy
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Discussion papers
https://doi.org/10.5194/wes-2019-59
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/wes-2019-59
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Submitted as: research article 27 Aug 2019

Submitted as: research article | 27 Aug 2019

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Wind Energy Science (WES).

Beam-like models for the analyses of curved, twisted and tapered HAWT blades in large displacements

Giovanni Migliaccio1, Giuseppe Ruta2, Stefano Bennati1, and Riccardo Barsotti1 Giovanni Migliaccio et al.
  • 1Civil and Industrial Engineering, University of Pisa, Pisa, 56122, Italy
  • 2Structural and Geotechnical Engineering, University La Sapienza of Roma, Roma, I-00184, Italy

Abstract. The continuous effort to better predict the mechanical behavior of wind turbine blades is related to lowering the cost of energy. But new design strategies and the continuous increase in the size and flexibility of modern blades make their aero-elastic modeling ever more challenging. For the structural part, the best compromise between computational efficiency and accuracy can be obtained by schematizing the blades as suitable beam-like elements. This paper addresses the modeling of the mechanical behavior of complex beam-like structures, which are curved, twisted and tapered in their reference state, undergo large displacements, 3D cross-sectional warping and small strains. A suitable model for the problem at hand is proposed. It can be used to analyze large deflections under prescribed loads and allows the 3D strain and stress fields in the structure to be determined. Analytical results obtained by applying the proposed modeling approach are illustrated.

Giovanni Migliaccio et al.
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Status: final response (author comments only)
Status: final response (author comments only)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Giovanni Migliaccio et al.
Giovanni Migliaccio et al.
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Short summary
This paper addresses the modeling of the mechanical behavior of complex beam-like structures, which are curved, twisted and tapered in their reference state, undergo large displacements, 3D cross-sectional warping and small strains. A suitable model for the problem at hand is proposed. It can be used to analyze large deflections under prescribed loads and to determine the stress and strain fields in the structure. Analytical results obtained by applying the proposed modeling approach are shown.
This paper addresses the modeling of the mechanical behavior of complex beam-like structures,...
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