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


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
Publication date2005
EditionO. T. Thomsen, E. Bozhevolnaya and A. Lyckegaard
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


Conference7th International Conference on Sandwich Structures


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