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TECHNICAL PAPERS

Computerized Method for Preliminary Structural Design of Composite Wind Turbine Blades

[+] Author and Article Information
Gunjit S. Bir

National Wind Technology Center, National Renewable Energy Laboratory, 1617 Cole Boulevard, Golden, CO 80401e-mail: gunjit_bir@nrel.gov

J. Sol. Energy Eng 123(4), 372-381 (Jul 01, 2001) (10 pages) doi:10.1115/1.1413217 History: Received April 01, 2001; Revised July 01, 2001
Copyright © 2001 by ASME
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References

Laird, D. L., 2001, “A Numerical Manufacturing and Design Tool Odyssey,” Proc. of AIAA/ASME Wind Energy Symp., Paper No. AIAA-2001-0023, pp. 20–25.
Bruhn, E. F., 1965, Analysis and Design of Flight Vehicle Structures, Tri-State Offset Co., pp. A18.11–A18.23.
Peery, D. J., 1950, Aircraft Structures, McGraw-Hill, New York.
Hodges, D. H., and Dowell, E. H., 1974, “Nonlinear Equations of Motion for the Elastic Bending and Torsion of Twisted Nonuniform Rotor Blades,” NASA TN D-7818.
Elliott, A. S., and Wright, A. D., 1994, “ADAMS/WT: An Industry-Specific Interactive Modeling Interface for Wind Turbine Analysis,” Wind Energy 1994, W. D. Musial, S. M. Hock, and D. E. Berg (eds.), SED-Vol. 14, ASME, pp. 111–122.
Giguere, P., 1999, “Aerodynamic Blade Design for a Two-Blade/Two-Speed Rotor: Design Review and Analysis Support for Aerodynamic Design of Rotor Blades in NREL Wind Turbine Development Subcontracts,” NREL/NWTC Internal Report, Golden CO.
Hansen, A. C., 1992, “Yaw Dynamics of Horizontal Axis Wind Turbines,” Final Report, Univ. of Utah, Salt Lake City UT.
Mandell, J. F., and Samborsky, D. D., 1997, “DOE/MSU Composite Material Fatigue Database: Test Methods, Materials, and Analysis,” SAND97-3002, Sandia National Laboratories, Albuquerque NM.

Figures

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Bending-moment, chord, and twist distribution along the blade
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Structural layout at a typical blade section
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(a) Laminate thickness variation over the outboard span, (b) Laminate thickness variation over the inboard span, (c) Laminate thickness variation over the inboard span, and (d) Core-material thickness variation over the blade span
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(a) Variation of out-of-plane bending stiffness, (b) Variation of edgewise bending stiffness, (c) Variation of torsion stiffness, and (d) Variation of mass.

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