Fig. 1 A Chordwise asymmetric model (1-cell)
Fig. 2 A Thin walled-beam for modeling
Fig. 3 Coordinate System
Fig. 4 Symmetrical model for comparison
Fig. 5 Stiffness coefficients
Fig. 6 Eigenfrequencies of asymmetric(variant) vs. symmetric (base) models
Fig. 7 Eigenfrequencies for CW and NCW cases
Fig. 8 Eigenfrequencies for taper ratio
Fig. 9 Eigenfrequencies for thickness ratio
Table 1 Mass coefficients bj for CUS & CAS
Table 2 Stiffness coefficients aij
참고문헌
- L. Librescu and O. Song, Thin-Walled Composite Beams: Theory and Application, Solid Mechanics and its Applications, Volume 131, Springer, ISBN-101-4020-3457-1, 2006.
- O. Song, modeling and Response Analysis of Thin-Walled Beam Structures Constructed of Advanced Composite Materials, Ph.D. Thesis, Virginia Polytechnic Institute and State University, 1990.
- O. Song and L. Librescu, "Free Vibration of Anisotropic Composite Thin-Walled Beams of Closed Cross-Section Contour", Journal of Sound and Vibration, Vol. 167, No. 1, pp. 129-147, 8 Oct. 1993. https://doi.org/10.1006/jsvi.1993.1325
- L. Librescu, L. Meirovitch, and O. Song, "Refined Structural modeling for Enhancing Vibrational and Aeroelastic Characteristics of Composite Aircraft Wings", La Recherche Aerospatiale, Vol. 1996, No. 1, pp. 23-35, 1996.
- Z. Qin and L. Librescu, "Static and Dynamic Validations of a Refined Thin-Walled Composite Beam model", AIAA Journal, Vol. 39, No. 12, pp. 2422-2424, Technical Notes, Dec. 2001. https://doi.org/10.2514/2.1259
- S. Na, H. Yoon, and L. Librescu, "Effect of Taper Ratio on Vibration and Stability of a Composite Thin-Walled Spinning Shaft", Thin-Walled Structures, Vol. 44, No. 3, pp. 362-371, Mar. 2006. https://doi.org/10.1016/j.tws.2006.02.007
- K-T Kim and O. Song, "Aileron Reversal of Nonuniform and Swept Composite Aircraft Wings," Journal of Aircraft, Vol. 50, No. 3, pp. 681-693, May-Jun. 2013. https://doi.org/10.2514/1.C031212
- K-T Kim, "A Study on the Correction of the Warping Functions of Composite Thin-Walled Beams with a Chordwise Asymmetric Closed Cross-Section," Journal of Aerospace System Engineering, Vol. 12, No. 4, pp. 9-17, Aug. 2018. https://doi.org/10.20910/JASE.2018.12.4.9