Since 1963
ARTICLE
Dynamic modeling of wind turbine blades under uncertainties: nonlinear
analysis and stochastic quantification by advanced finite elements
1
Mechanical Modeling and Manufacturing Laboratory (LA2MP), National School of Engineers of Sfax, University of Sfax, Sfax, Tunisia
2
Higher Institute of Applied Sciences and Technology of Kairouan, University of Kairouan, Tunisia
3
Higher Institute of Applied Sciences and Technology of Sousse, University of Sousse, Tunisia
Submission date: 2026-04-25
Final revision date: 2026-07-06
Acceptance date: 2026-07-15
Online publication date: 2026-07-22
Corresponding author
Rania MAKTOUF
Mechanical Modeling and Manufacturing Laboratory (LA2MP), Mechanical department, National School of Engineers of Sfax, University of Sfax, 3038, sfax, Tunisia
Mechanical Modeling and Manufacturing Laboratory (LA2MP), Mechanical department, National School of Engineers of Sfax, University of Sfax, 3038, sfax, Tunisia
KEYWORDS
TOPICS
ABSTRACT
This article presents a modal and nonlinear dynamic analysis of a twisted blade, highlighting the influence of rotational speed on bending and torsional responses. An advanced finite element formulation is developed, based on separating translational and rotational kinetic energies. The blade is modeled using six-degree-of-freedom beam elements with non-uniform cross-sections, enabling the accurate capture of geometric nonlinearities. Furthermore, the study incorporates the effect of uncertainties in material properties on the dynamic response, combining Monte Carlo simulations and a polynomial chaos approach. The results show that these uncertainties significantly influence
displacements, particularly at high rotational speeds, underscoring the importance of robust and probabilistic modeling.
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| eISSN: | 2543-6309 |
| ISSN: | 1429-2955 |
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