Effect of shallow-angled skins on the structural performance of the large-scale wind turbine blade
- Title
- Effect of shallow-angled skins on the structural performance of the large-scale wind turbine blade
- Author
- 하성규
- Keywords
- Cost of energy; Large-scale wind turbine blade; Shallow-angled skin
- Issue Date
- 2014-05
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
- Citation
- RENEWABLE ENERGY, 권: 71, 페이지: 100-112
- Abstract
- Two shallow-angled symmetric and asymmetric skins, with off-axis fiber angles of less than 45, were proposed and employed to a 5 MW wind turbine blade. For the symmetric configuration, shallow-angled skins were applied to both the pressure and suction sides of the blade, while, for the asymmetric configuration, only the pressure side was implemented with a shallow-angled skin, keeping the conventional 45-degree-angled skin for the suction side. The blade tip deflection, modal frequencies, buckling stability, and failure index were computed for off-axis fiber angles of 45 degrees, 35 degrees, and 25 degrees. The use of shallow-angled skins improved blade bending stiffness and strength. The buckling resistance decreased for symmetric skins and remained unchanged for asymmetric skins; the former case was compensated for by increasing the core thickness. For both skin configurations, a reduction in the blade failure index of up to 18% and 38%, and mass reductions of up to 8% and 13% were demonstrated for the 35 and 25 shallow-angled skins, respectively. (C) 2014 Elsevier Ltd. All rights reserved.
- URI
- https://www.sciencedirect.com/science/article/pii/S0960148114002742?via%3Dihubhttp://hdl.handle.net/20.500.11754/47099
- ISSN
- 0960-1481
- DOI
- 10.1016/j.renene.2014.05.023
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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