ARTICLE
Numerical and experimental analysis of a segmented wind turbine blade under assembling load effects
 
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1
Mechanics, Modelling and Production Laboratory (LA2MP), National School of Engineers of Sfax, University of Sfax, Tunisia
 
2
Centro de Ciencias e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Portugal
 
 
Submission date: 2017-02-21
 
 
Acceptance date: 2018-07-24
 
 
Publication date: 2019-01-20
 
 
Journal of Theoretical and Applied Mechanics 2019;57(1):85-97
 
KEYWORDS
ABSTRACT
In this paper, numerical and experimental modal analysis of a segmented wind turbine blade assembled with a steel threaded shaft and a nut are presented. The blade segments are built by a 3D printer using ABS material. The experimental modal parameters identification has been achieved using the Eigen system Realization Algorithm (ERA) method for different values of the blade segments assembly force caused by the nut tightening torque. Furthermore, a three dimensional finite element model has been built using DTK18 three node triangular shell elements in order to model the blade and the threaded shaft structure, taking into account the additional stiffness caused by the nut tightening torque. This study covers the blade segments assembly force effects on the rotating blade vibration characteristics. The numerical model is adjusted and validated by the identified experimental results. This work highlights the significant variation of the natural frequencies of the segmented wind turbine blade by the assembling load of the segments versus blade rotating speed.
 
REFERENCES (22)
1.
Abdulaziz A.H., Elsabbagh A.M., Akl W.N., 2015, Dynamic and static characterization of horizontal axis wind turbine blades using dimensionless analysis of scaled-down models, International Journal of Renewable Energy Research (IJRER), 5, 2, 404-418.
 
2.
Bayoumy A.H., Nada A.A., Megahed S.M., 2013, A continuum based three-dimensional modeling of wind turbine blades, Journal of Computational and Nonlinear Dynamics, 8, 3, 031004.
 
3.
Bhat C., Noronha D.J., Saldanha F.A., 2015a, Structural performance evaluation of modularized wind turbine blade through finite element simulation, International Journal of Mechanical, Aerospace, Industrial, Mechatronic and Manufacturing Engineering, 9, 6, 930-942.
 
4.
Bhat C., Noronha D.J., Saldanha F.A., 2015b, Structural performance evaluation of segmented wind turbine blade through finite element simulation, International Journal of Mechanical, Aerospace, Industrial, Mechatronic and Manufacturing Engineering, 9, 6, 996-1005.
 
5.
Branner K., Berring P., Berggreen C., Knudsen H.W., 2007, Torsional performance of wind turbine blades – Part II: Numerical validation, International Conference on Composite Materials (ICCM-16).
 
6.
Broehl J., 2014, Wind Energy Innovations: Segmented Blades, http://www.navigantresearch.co....
 
7.
Dhar S., 2006, Development and validation of small-scale model to predict large wind turbine behavior, Doctoral dissertation, Indian Institute of Technology, Bombay.
 
8.
Griffith D.T., 2009, Structural dynamics analysis and model validation of wind turbine structures, 50th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference 17th AIAA/ASME/AHS Adaptive Structures Conference 11th AIAA, p. 2408.
 
9.
Ha N.S., Vang H.M., Goo N.S., 2015, Modal analysis using digital image correlation technique: An application to artificial wing mimicking beetles hind wing, Experimental Mechanics, 55, 5, 989-998.
 
10.
Hamdi H., Mrad C., Hamdi A., Nasri R., 2014, Dynamic response of a horizontal axis wind turbine blade under aerodynamic, gravity and gyroscopic effects, Applied Acoustics, 86, 154-164.
 
11.
Kang H., Chang C., Saberi H., Ormiston R.A., 2014, Assessment of beam and shell elements for modeling rotorcraft blades, Journal of Aircraft, 51, 2, 520-531.
 
12.
Kim S.W., Kim E.H., Rim M.S., Shrestha P., Lee I., Kwon I.B., 2011, Structural performance tests of down scaled composite wind turbine blade using embedded fiber Bragg grating sensors, International Journal Aeronautical and Space Sciences, 12, 4, 346-353.
 
13.
Larsen G.C., Hansen M.H., Baumgart A., Carl´en I., 2002, Modal Analysis of Wind Turbine Blades, Riso National Laboratory, Denmark.
 
14.
Maalawi K.Y., Negm H.M., 2002, Optimal frequency design of wind turbine blades, Journal of Wind Engineering and Industrial Aerodynamics, 90, 8, 961-986.
 
15.
McKittrick L.R., Cairns D.S., Mandell J., Combs D.C., Rabern D.A., Van Luchene R.D., 2001, Analysis of a composite blade design for the AOC 15/50 wind turbine using a finite element model, Sandia National Laboratories Report.
 
16.
Molenaar D.P., 2003, Experimental modal analysis of a 750 kW wind turbine for structural model validation. ASME 2003 Wind Energy Symposium, American Society of Mechanical Engineers, 322-339.
 
17.
Park J.H., Park H.Y., Jeong S.Y., Lee S.I., Shin Y.H., Park J.P., 2010, Linear vibration analysis of rotating wind-turbine blade, Current Applied Physics, 10, 2, S332-S334.
 
18.
Saldanha F.A., Rao V.V., Christopher J., Adhikari R., 2013, Investigations on concepts for modularizing a horizontal axis wind turbine blade, ASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, pp. V008T12A003-V008T12A003, American Society of Mechanical Engineers.
 
19.
Sami S., Zai B.A., Khan M.A., 2014, Dynamic analysis of a 5KW wind turbine blade with experimental validation, Journal of Space Technology, 4, 1, 82-87.
 
20.
Sheibani M., Akbari A.A., 2015, Finite element modeling of a wind turbine blade, Journal of Vibroengineering, 17, 7.
 
21.
Tartibu L.K., Kilfoil M., Van Der Merwe A.J., 2012, Vibration analysis of a variable length blade wind turbine, International Journal of Advances in Engineering and Technology, 4, 1, 630-639.
 
22.
Yangui M., Bouaziz S., Taktak M., Haddar M., El-Sabbagh A., 2016, Nonlinear analysis of twisted wind turbine blade, Journal of Mechanics, doi:10.1017/jmech.2016.120, 1-10.
 
eISSN:2543-6309
ISSN:1429-2955
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