Comparing Fatigue Life Estimations of Composite Wind Turbine Blades using different Fatigue Analysis Tools

Oscar Castro, Matthew Lennie, Kim Branner, George Pechlivanoglou, Christian Nayeri, Christian Oliver Paschereit

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Abstract

In this paper, fatigue lifetime prediction of NREL 5MW reference wind turbine is presented. The fatigue response of materials used in selected blade cross sections was obtained by applying macroscopic fatigue approaches and assuming uniaxial stress states. Power production and parked load cases suggested by the IEC 61400-1 standard were studied employing different load time intervals and by using two novel fatigue tools called ALBdeS and BECAS+F. The aeroelastic loads were defined thought aeroelastic simulations performed with both FAST and HAWC2 tools. The stress spectra at each layer were calculated employing laminated composite theory and beam cross section methods. The Palmgren-Miner linear damage rule was used to calculate the accumulation damage. The theoretical results produced by both fatigue tools proved a prominent effect of analysed design load conditions on the estimated lifetime of the wind turbine blades and are good starting points for future fatigue analysis using other methods.
Original languageEnglish
Title of host publicationProceedings of the 20th International Conference on Composite Materials
Number of pages13
PublisherICCM20 Secretariat
Publication date2015
Publication statusPublished - 2015
Event20th International Conference on Composite Materials (ICCM20) - Copenhagen, Denmark
Duration: 19 Jul 201524 Jul 2015
Conference number: 20

Conference

Conference20th International Conference on Composite Materials (ICCM20)
Number20
CountryDenmark
CityCopenhagen
Period19/07/201524/07/2015

Keywords

  • Composite blade
  • Fatigue damage
  • Wind turbine blade

Cite this

Castro, O., Lennie, M., Branner, K., Pechlivanoglou, G., Nayeri, C., & Paschereit, C. O. (2015). Comparing Fatigue Life Estimations of Composite Wind Turbine Blades using different Fatigue Analysis Tools. In Proceedings of the 20th International Conference on Composite Materials ICCM20 Secretariat.