Comparison Study on Rigorous Structural Modeling of Composite Rotor Blades

The study is focused on structural modeling of a helicopter rotor blade with an objective to provide an assessment for modeling accuracy. For this purpose, a comparison study is conducted with numerical methods for static deflection, free-vibration and transient forced response analysis. A finite-element model based on mixed variational formulation for dynamics of moving beams and MSC.NASTRAN finite-element code are studied as main analysis tools; the results are compared with published static deflection and free-vibration test results of composite beams and other numerical methods where available. Modeling accuracy of the numerical methods is found satisfactory for the cases in which the parameters are defined properly.

[1]  David A. Peters,et al.  Aeroelastic Stability of Composite Hingeless Rotors in Hover with Finite-State Unsteady Aerodynamics , 1999 .

[2]  Dewey H. Hodges,et al.  Review of composite rotor blade modeling , 1990 .

[3]  Carlos E. S. Cesnik,et al.  Assessment of Beam Modeling Methods for Rotor Blade Applications , 2001 .

[4]  R. Blevins,et al.  Formulas for natural frequency and mode shape , 1984 .

[5]  Tao Cheng,et al.  Structural dynamics modeling of helicopter blades for computational aeroelasticity , 2002 .

[6]  C. Cesnik,et al.  Cross-sectional analysis of initially twisted and curved composite beams , 1994 .

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

[8]  李幼升,et al.  Ph , 1989 .

[9]  A. Atilgan,et al.  Unified nonlinear analysis for nonhomogeneous anisotropic beams with closed cross sections , 1991 .

[10]  Dewey H. Hodges,et al.  Performance Enhancement of a Composite Tilt-Rotor Using Aeroelastic Tailoring , 2000 .

[11]  Robert A. Ormiston,et al.  Assessment of 1-D Versus 3-D Methods for Modeling Rotor Blade Structural Dynamics , 2010 .

[12]  C. Neipp,et al.  Large and small deflections of a cantilever beam , 2002 .

[13]  D. Hodges.  A mixed variational formulation based on exact intrinsic equations for dynamics of moving beams , 1990 .

[14]  John Dugundji,et al.  Experiments and analysis for structurally coupled composite blades under large deflections. II - Dynamic behavior , 1989 .

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

[16]  Dogan Ozturk.  Development of a Myklestad's rotor blade dynamic analysis code for application to JANRAD , 2002 .

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

[18]  James L. Vandiver.  RPH Preliminary Design, Trend Analysis and Initial Analysis of the NPS Hummingbird , 1992 .

[19]  Peretz P. Friedmann,et al.  Rotary-wing aeroelasticity with application to VTOL vehicles , 1990 .