Simulation of fatigue failure in a full composite wind turbine blade

Shokrieh, M.M.; Rafiee, Roham

doi:10.1016/j.compstruct.2005.04.027

Cited by 181 publications

(91 citation statements)

References 5 publications

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“…According to the results of different wind speed, the loads in wind turbine blades are established. Fatigue life was estimated by using the Fast Fourier transform for the cycle, Goodman diagrams and the load spectrum to get the fatigue stress and the S-N linear damage equation for accumulating the damage [5,9]. By combining these methods, a dynamic structural problem for the fatigue can be converted into a static structural problem.…”

Section: Fatigue Analysismentioning

confidence: 99%

“…According to Miner's rule, the structure is defined as failure when the cumulative damage D exceeds unity [1,5,9], where D is defined as Cycles N where ni is the load cycle number for a stress range i, and Ni is the allowable load cycle number associated with i. By the method mentioned above, the damage per hour can be generated and the total hour of fatigue life can be estimated.…”

Section: Miner Lawmentioning

confidence: 99%

“…One challenge in fatigue damage estimation is that the fatigue damage of reliable wind turbine blades is under complex load conditions, such as wind load, gravitational load, and wind shear effect [1,2]. Among these loads, the wind speed is significantly affected by the environmental condition with relatively high frequency and amplitude in offshore environments, which could be generated by deterministic distribution [3][4][5]. It is important to develop a method for analysing the blade fatigue damage before the blades fail catastrophically, which may destroy the entire wind turbine.…”

Section: Introductionmentioning

confidence: 99%

“…Based on Goodman diagram and S-N curve, the equivalent load spectra for each cycle can be investigated [7,8,9]. This stress is utilised to estimate fatigue damage in the blade using Miner's rule [5,6], and then fatigue life is estimated.…”

Section: Introductionmentioning

confidence: 99%

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Fatigue Damage Model of Wind Turbine Composite Blades Under Uncertain Wind Speed

Zhang¹,

Chen²

2017

Proceedings of the 2nd International Conference on Uncertainty Quantification in Computational Sciences and Engineering (UNCECO

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Section: Fatigue Analysismentioning

confidence: 99%

Section: Miner Lawmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Fatigue Damage Model of Wind Turbine Composite Blades Under Uncertain Wind Speed

Zhang¹,

Chen²

2017

Proceedings of the 2nd International Conference on Uncertainty Quantification in Computational Sciences and Engineering (UNCECO

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“…Wind turbines are fatigue critical machines and the design of many of their components, in particular the blades, are dictated by fatigue considerations [32]. Several factors are responsible to the fatigue phenomena of the wind turbine blades which can be summarized as shown below [33]:…”

Section: Optmization With Fatigue and Failure Constraintsmentioning

confidence: 99%

Optimal Design for a Composite Wind Turbine Blade With Fatigue and Failure Constraints

Chehouri

Younès

Ilinca

et al. 2015

Transactions of the Canadian Society for Mechanical Engineering

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The search for more efficient and sustainable renewable energies is rapidly growing. Throughout the years, wind turbines matured towards a lowered cost-of-energy and have grown in rotor size therefore stretched the role of composite materials that offered the solution to more flexible, lighter and stronger blades. The objective of this paper is to present an improved version of the preliminary optimization tool called CoBlade, which will offer designers and engineers an accelerated design phase by providing the capabilities to rapidly evaluate alternative composite layups and study their effects on static failure and fatigue of wind turbine blades. In this study, the optimization formulations include non-linear failure constraints. In addition a comparison between 3 formulations is made to show the importance of choosing the blade mass as the main objective function and the inclusion of failure constraints in the wind turbine blade design.Keywords: wind turbine, blade, optimization, failure, Co-Blade. CONCEPTION OPTIMALE D'UNE PALE D'ÉOLIENNE EN MATÉRIAUX COMPOSITES AVEC DES CONTRAINTES DE FATIGUE ET DE RUPTURE RÉSUMÉLa recherche pour des énergies renouvelables plus efficaces et durables est en forte croissance. Au fil des années, les éoliennes ont acquis de la maturité avec un coût plus réduit et des tailles de rotor plus grandes élargissant ainsi l'utilisation des matériaux composites qui offrent plus de flexibilité, plus de légèreté et plus de solidité. L'objectif de cet article est de proposer une version améliorée du logiciel d'optimisation préli-minaire Co-Blade, qui permettra aux concepteurs d'accélérer la phase de conception des pales d'éolienne en matériaux composites grâce à des outils d'études de diverses configuration des laminés composites et de leur comportements en rupture et en fatigue. Dans cette étude, les formules d'optimisation tiennent compte des contraintes de ruptures non linéaires. Additionnellement, une comparaison de 3 formules d'optimisation a été effectuée afin de mettre en évidence l'importance du choix de la masse tel que fonction objective principale et de la considération des contraintes de rupture dans la conception des pales d'éoliennes.

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