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Mechanical behaviour of wind blades made in composite materials has been investigate through a F.E.M. approach simulating a stress analysis over blade components. Nowadays, use of composite materials appear as wide in mechanical as well as in more field of engineering design since composite properties brings to wide and different applications due to their lightness, resistance and stress capacity. The composite materials used in wind blades appear really diffused but the peculiar mechanical framework needs a deep investigation about partial structural integrity as full. In this paper a simulation analysis by finite element code, over a concise wind blade part, has been performed showing, in the first step, the constitutive behaviour under classic load conditions, then developing a deep analysis under cyclic loads joint to thermal and chemical actions, so that a clear framework of the fatigue life can be characterized
composite materials, wind blades damaging, fatigue failure
Ashwill T. D., Paquette J. A. (2006). Composite materials for innovative turbine blades. Wind Energy Technology Department, Sandia National Laboratories, Albuquerque, NM.
Battacharya S., Das S., Sarkar A., Guin A., Mullick A. (2017). Numerical simulation of flow and heat transfer around hexagonal cylinder. International Journal of Heat and Technology, Vol. 35, No. 2, pp. 360-363. https://doi.org/10.18280/ijht.350218
Brondsted P. (2005). Composite Materials for wind turbine blades. Annual Review of Materials Research, Vol. 5, pp. 505-538. https://doi.org/10.1146/annurev.matsci.35.100303.110641
Buonsanti M. (2018). Multiscale damage modelling on aeronautical composite under low energy impact. Journal of Multiscale Modelling, Vol. 9, No 3, pp. 1-17. https://doi.org/10.1142/S1756973718400036
Griffin D. A. (2002). Concepts for adaptive wind turbine blades. ASME Conference. https://doi.org/10.1115/WIND2002-28
Ike C. C. (2018). Energy formulation for flexural – torsional buckling of thin-walled colum with open cross-section. Mathematical Modelling Engineering Problems, Vol. 5, No. 2, pp. 58-66. https://doi.org/10.18280/mmep.050202
Kant T., Babu C. S. (2000). Thermal buckling analysis of skew fibre-reinforced composite and sandwich plates using shear deformable finite element models. Composite Structures, Vol. 49, pp. 77-85. https://doi.org/10.1016/S0263-8223(99)00127-0
Lauders B. D., Disimile P. J., Toy N. (2017). The fluid thermal field over a flat heated disk. International Journal of Heat and Technology, Vol. 35, No. 4, pp. 799-805. https://doi.org/10.18280/ijht.350415
Li L. (2018). Damage and fracture of a ceramic matrix composite under isothermal and thermo-mechanical fatigue loading. Theoretical and Applied Fracture Mechanics, Vol. 95, pp. 218-232. https://doi.org/10.1016/j.tafmec.2018.03.002
Rolfes R., Rohwer K. (2000). Integrated thermal and mechanical analysis of composite plates and shells. Composite Science and Technology, Vol. 60, pp. 2097-2106. https://doi.org/10.1016/S0266-3538(00)00117-2