Structural behavior of two-cell composite rotor blades with elastic couplings

Vlasov theory is expanded to analyze two-cell composite rotor blades made out of general composite laminates including the transverse shear deformation of the cross section. Variation of shear stiffness along the contour of the section is included in the warping function. To validate this analysis, two-cell graphite-epoxy composite blades with extension-torsion coupling were fabricated using a matched-die molding technique

[1]  M. Borri,et al.  A large displacement formulation for anisotropic beam analysis , 1986 .

[2]  M. Borri,et al.  Anisotropic beam theory and applications , 1983 .

[3]  I. Chopra,et al.  Thin-walled composite beams under bending, torsional, and extensional loads , 1990 .

[4]  Inderjit Chopra,et al.  Experimental-theoretical investigation of the vibration characteristics of rotating composite box beams , 1992 .

[5]  Inderjit Chopra,et al.  Experimental and theoretical analysis of composite I-beams with elastic couplings , 1991 .

[6]  A. Gjelsvik,et al.  The Theory of Thin-Walled Bars , 1981 .

[7]  V. Vlasov.  Thin-walled elastic beams , 1961 .

[8]  E. Smith,et al.  Formulation and evaluation of an analytical model for composite box-beams , 1991 .

[9]  Dewey H. Hodges,et al.  Nonclassical Behavior of Thin-Walled Composite Beams with Closed Cross Sections , 1990 .

[10]  A. F. Johnson.  Bending and torsion of anisotropic beams , 1973 .

[11]  Mark V. Fulton,et al.  Free-Vibration Analysis of Composite Beams , 1991 .

[12]  Olivier A. Bauchau,et al.  Large displacement analysis of naturally curved and twisted composite beams , 1987 .

[13]  A. Atilgan,et al.  On the buckling behavior of thin walled laminated composite open section beams , 1989 .

[14]  Steven J. Winckler,et al.  Technical Notes: Hygrothermally Curvature Stable Laminates with Tension-Torsion Coupling , 1985 .

[15]  Inderjit Chopra,et al.  Aeroelastic Stability Analysis of a Composite Rotor Blade , 1985 .

[16]  Mark W. Nixon,et al.  Extension-twist coupling of composite circular tubes with application to tilt rotor blade design , 1987 .

[17]  R. Chandra,et al.  Vibration Characteristics of Composite I-Beams with Elastic Couplings under Rotation , 1991 .

[18]  J. B. Kosmatka,et al.  Extension-bend-twist coupling behavior of thin-walled advanced composite beams with initial twist , 1991 .

[19]  John Dugundji,et al.  Experiments and analysis for composite blades under large deflections. II - Dynamic behavior , 1990 .

[20]  Ali Rana Atilgan,et al.  Structural modeling for multicell composite rotor blades , 1987 .

[21]  Inderjit Chopra,et al.  Structural modeling of composite beams with induced-strain actuators , 1993 .