Torsional Performance of Wind Turbine Blades: Part II: Numerical Validation

Kim Branner, Peter Berring, Christian Berggreen, Henrik W. Knudsen

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

    Abstract

    The present work investigates how well different finite element modeling techniques can predict bending and torsion behavior of a wind turbine blade. Two shell models are investigated. One model has element offsets and the other has the elements at the mid-thickness surfaces of the model. The last two models investigated use a combination of shell and solid elements. The results from the numerical investigations are compared with measurements from testing of a section of a full-scale wind turbine blade. It is found that only the combined shell/solid models give reliable results in torsion. Both the combined shell/solid models and the shell model with element offsets are found to give reliable bending results. For the combined shell/solid models, convergence tests show that it is necessary to have 3 solid elements through the thickness of the sandwich cores and the adhesive bonds.
    Original languageEnglish
    Title of host publicationSixteenth International Conference on Composite Materials : A Giant Step towards Environmental Awareness: From Green Composites to Aerospace
    EditorsKazuro Kageyama, Takashi Ishikawa, Nobuo Takeda, Masaki Hojo, Sunao Sugimoto, Toshio Ogasawara
    Number of pages1432
    Volume2
    Place of PublicationTokyo, Japan
    PublisherJapan Society for Composite Materials
    Publication date2007
    ISBN (Print)978-4-931136-06-9
    Publication statusPublished - 2007
    Event16th International Conference on Composite Materials: A Giant Step towards Environmental Awareness: From Green Composites to Aerospace - Kyoto, Japan
    Duration: 8 Jul 200713 Jul 2007
    Conference number: 16
    http://www.jscm.gr.jp/conference/iccm-16/conference_topics/index.html

    Conference

    Conference16th International Conference on Composite Materials
    Number16
    Country/TerritoryJapan
    CityKyoto
    Period08/07/200713/07/2007
    Internet address

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