Application of Load Carrying Sandwich Elements in Wind Turbine Blades

Jacob Fisker Jensen, Jacob Pagh Schultz, Carl Christian Berggreen, Kim Branner

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

    Abstract

    The present work investigates the possibilities and drawbacks when applying sandwich as opposed to single skin composites in the flanges of the load carrying spar in a future 180 m wind turbine rotor. FEA is applied to investigate two basic designs with single skin and sandwich flanges respectively. For a single skin design, buckling is critical compared to other design criterions. By introducing sandwich, a significant weight reduction and increased buckling capacity is obtained. Tower clearance now becomes critical. Proper choice of core material and thickness is important to prevent face wrinkling and large tip deflection. Geometric non-linear analysis showed sensitivity to imperfections.
    Original languageEnglish
    Title of host publicationSandwich Structures 7 : Advancing with Sandwich
    Number of pages1034
    Place of PublicationNetherlands
    PublisherSpringer
    Publication date2005
    EditionO. T. Thomsen, E. Bozhevolnaya and A. Lyckegaard
    Pages947-956
    ISBN (Print)978-1-4020-3444-2
    Publication statusPublished - 2005
    Event7th International Conference on Sandwich Structures - Aalborg, Denmark
    Duration: 29 Aug 200531 Aug 2005
    Conference number: 7

    Conference

    Conference7th International Conference on Sandwich Structures
    Number7
    Country/TerritoryDenmark
    CityAalborg
    Period29/08/200531/08/2005

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