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.
|Title of host publication||Sandwich Structures 7 : Advancing with Sandwich|
|Number of pages||1034|
|Place of Publication||Netherlands|
|Edition||O. T. Thomsen, E. Bozhevolnaya and A. Lyckegaard|
|Publication status||Published - 2005|
|Event||7th International Conference on Sandwich Structures - Aalborg, Denmark|
Duration: 29 Aug 2005 → 31 Aug 2005
Conference number: 7
|Conference||7th International Conference on Sandwich Structures|
|Period||29/08/2005 → 31/08/2005|
Jensen, J. F., Schultz, J. P., Berggreen, C. C., & Branner, K. (2005). Application of Load Carrying Sandwich Elements in Wind Turbine Blades. In Sandwich Structures 7: Advancing with Sandwich (O. T. Thomsen, E. Bozhevolnaya and A. Lyckegaard ed., pp. 947-956). Netherlands: Springer.