Dynamic investigation of twist-bend coupling in a wind turbine blade

This paper presents some results and aspects of the multidisciplinary and interdisciplinary research oriented for the experimental and numerical study in static and dynamic domains on the bend-twist coupling in the full scale section of a wind turbine blade structure. The main goal of the conducted research is to confirm experimentally the numerical prediction of modification of the dynamic and static properties of a wind turbine blade. The bend-twist coupling was implemented by adding angled UD (UniDirectional) layers on the suction and pressure side of the blade. Static and dynamic tests were performed on a section of the full scale wind turbine blade provided by Vestas Wind Systems A/S. The results are presented and compared with the measurements of the original and modified blade. Comparison analysis confirmed that UD layers introduce measurable bend-twist couplings, which was not present in the original blade.

[1]  Paul S. Veers,et al.  AEROELASTIC BEHAVIOR OF TWIST-COUPLED HAWT BLADES , 1998 .

[2]  Cheng-Huat Ong,et al.  Design, Manufacture and Testing of A Bend-Twist D-Spar , 1999 .

[3]  Gunjit Bir,et al.  The Use of Twist-Coupled Blades to Enhance the Performance of Horizontal Axis Wind Turbines , 2001 .

[4]  James E. Locke,et al.  The Implementation of Braided Composite Materials in the Design of a Bend-Twist Coupled Blade , 2002 .

[5]  Michael Zuteck.  Adaptive Blade Concept Assessment: Curved Platform Induced Twist Investigation , 2002 .

[6]  Gunner Chr. Larsen,et al.  Modal Analysis of Wind Turbine Blades , 2002 .

[7]  James E. Locke,et al.  Design Studies for Twist-Coupled Wind Turbine Blades , 2003 .

[8]  O.J.D. Kristensen,et al.  Applied modal analysis of wind turbine blades , 2003 .

[9]  P. Guillaume,et al.  The PolyMAX Frequency-Domain Method: A New Standard for Modal Parameter Estimation? , 2004 .

[10]  Daniel Todd Griffith,et al.  Modal Testing of the TX-100 Wind Turbine Blade , 2006 .

[11]  K. Branner,et al.  Torsional performance of wind turbine blades - Part 2: Numerical validation , 2007 .

[12]  K. Branner,et al.  Torsional Performance of Wind Turbine Blades: Part I: Experimental Investigation , 2007 .

[13]  Christian Deilmann.  Passive aeroelastic tailoring of wind turbine blades : a numerical analysis , 2009 .

[14]  Kim Branner,et al.  Investigation of structural behaviour due to bend-twist couplings in wind turbine blades , 2009 .

[15]  Justin M. Walsh,et al.  Composite material bend-twist coupling for wind turbine blade applications , 2009 .

[16]  B. Peeters,et al.  Contact Versus Non-Contact Measurement of a Helicopter Main Rotor Composite Blade , 2010 .

[17]  T. Ashwill,et al.  LOAD MITIGATION WITH TWIST-COUPLED HAWT BLADES. , 2011 .

[18]  S. Manzato,et al.  Experimental Verification of the Implementation of Bend-Twist Coupling in a Wind Turbine Blade , 2011 .