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http://dx.doi.org/10.7234/composres.2019.32.4.191

Experimental and Numerical Study on the Structural Stiffness of Composite Rotor Blade  

Jeon, Hyeon-Kyu (Department of Aerospace Engineering, Chungnam National University)
Jeon, Min-Hyeok (Department of Aerospace Engineering, Chungnam National University)
Kang, Min-Song (Department of Aerospace Engineering, Chungnam National University)
Kim, In-Gul (Department of Aerospace Engineering, Chungnam National University)
Park, Jae-Sang (Department of Aerospace Engineering, Chungnam National University)
Seok, Jin-Young (Department of Aerospace Engineering, Chungnam National University)
Publication Information
Composites Research / v.32, no.4, 2019 , pp. 191-198 More about this Journal
Abstract
The basic mechanical properties of helicopter rotor blade are important parameters for the analysis of helicopter performance. However, it is difficult to estimate these properties because the most of rotor blades consist of various materials such as composite materials and metals, etc. In this paper, the bending/torsional stiffness for composite rotor blade of unmanned helicopter were evaluated through experimental and analytical studies. In finite element analysis, the bending/torsional stiffness were evaluated through the relationship of load-displacement and element stiffness matrix. The evaluated stiffness from the measured strains and displacements in bending and torsional test agreed well with the derived results of FEA.
Keywords
Composite Rotor Blade; Cross Sectional Stiffness; Bending Test; Torsional Test; Stiffness Matrix;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 Yun, C.Y., and Kim, D.K., "The Measurement Test of Stiffness and Natural Frequencies for Bearingless Rotor System of Helicopter," Journal of the Korean Society for Noise and Vibration Engineering, Vol. 25, No. 12, 2015, pp. 881-887.   DOI
2 Lim, I.G., Choi, J.H., Lee, I., and Han, J.H., "Aeroelastic Stability Analysis of Bearingless Rotors with Composite Flexbeam in Hover," Journal of the Korean Society for Composite Materials, Vol. 17, No. 3, 2004, pp. 29-37.
3 Berring, P., Branner, K., Berggreen, C., and Knudsen, H.W., "Torsional Performance of wind turbine blades - Part 1: Experimental Investigation," Proceeding of the 16th International Conference on Composite Materials, Kyoto, Japan, July 2007, pp. 3-7.
4 Enei, C., Bernardini, G., Serafini, J., Mattioni, l., Ficuciello, C., and Vezzari, V., "Photogrammetric Detection Technique for Rotor Blades Structural Characterization," Journal of Physics : Conference Series, Vol. 658, No. 1, 2015, p. 012003.   DOI
5 Hoffmann, F., Keimer, R., and Riemenschneider, J., "Structural Modeling and Validation of an Active Twist Model Rotor Blade," CEAS Aeronautical Journal, Vol. 7, No. 1, 2016, pp. 43-55.   DOI
6 You, G.S., An Optimal Structural Design of Composite Box Structure Using Equivalent Cross-section Characteristics, Master Thesis, Chungnam National University, Republic of Korea, 2011.
7 Houbolt, J.C., and George, W.B., "Differential Equations of Motion for Combined Flapwise Bending, Chordwise Bending, and Torsion of Twisted Nonuniform Rotor Blade," NACA Technical Note 3905, NACA Report, 1957.
8 Larsen, G.C., and Kretz, A., "Experimental Determination of Structural Properties by Non-Destructive Methods," Proceeding of the European Wind Energy Association Conference and Exhibition, Thessaloniki, Greece, Oct. 1994, pp. 42-46.