A procedure to estimate the dynamic damped behavior of fiber reinforced composite beams submitted to flexural vibrations

This work proposes a procedure to estimate the dynamic damped behavior of fiber reinforced composite beams in flexural vibrations. A set of experimental dynamic tests were carried out in order to investigate the natural frequencies and modal shapes. These results are used to evaluate the damping factors by the program FREQ. These damping factors are then used as input to a damped dynamic analysis by the Finite Element Method, using Rayleigh Model. A good agreement between theoretical and experimental results was obtained. Thus, it became possible to validate the proposed procedure to evaluate dynamic damped behavior of composite beams.

[1]  Ronald F. Gibson,et al.  The Use of Strain Energy-Based Finite Element Techniques in the Analysis of Various Aspects of Damping of Composite Materials and Structures , 1992 .

[2]  Suong V. Hoa,et al.  A vibration method for measuring mechanical properties of composite, theory and experiment , 1997 .

[3]  R. Greif,et al.  Experimental Techniques for Dynamic Characterization of Composite Materials , 1995 .

[4]  Robert D. Adams,et al.  Effect of Fibre Orientation and Laminate Geometry on the Dynamic Properties of CFRP , 1973 .

[5]  R. Gibson,et al.  Improvement of Damping at the Micromechanical Level in Polymer Composite Materials Under Transverse Normal Loading by the Use of Special Fiber Coatings , 1998 .

[6]  M. Dokainish,et al.  Damped vibrations of laminated composite plates: modeling and finite element analysis , 1993 .

[7]  Sokichi Umekawa,et al.  Composites in Japan , 1992 .

[8]  B. D. Agarwal,et al.  Analysis and Performance of Fiber Composites , 1980 .

[9]  Dynamic response of antisymmetric cross-ply laminated composite beams with arbitrary boundary conditions , 1996 .

[10]  J. R. Banerjee,et al.  Dynamic response of composite beams with application to aircraft wings , 1997 .

[11]  S. Chaturvedi,et al.  The influence of fiber length and fiber orientation on damping and stiffness of polymer composite materials , 1986 .

[12]  Daniel J. Inman,et al.  Experimental verification of damping mechanisms in a composite beam , 1989 .

[13]  R. Adams,et al.  Prediction and Measurement of the Vibrational Damping Parameters of Carbon and Glass Fibre-Reinforced Plastics Plates , 1984 .

[14]  George A. Lesieutre,et al.  VIBRATION ANALYSIS OF LAMINATED BEAMS USING AN ITERATIVE SMEARED LAMINATE MODEL , 1997 .

[15]  N. Zabaras,et al.  Viscous damping approximation of laminated anisotropic composite plates using the finite element method , 1990 .

[16]  K. Bathe.  Finite Element Procedures , 1995 .

[17]  C. Bert,et al.  The behavior of structures composed of composite materials , 1986 .

[18]  Kshitij Gupta,et al.  Damping studies in fiber-reinforced composites : a review , 1999 .

[19]  D. Roylance.  INTRODUCTION TO COMPOSITE MATERIALS , 2000 .

[20]  N. Ganesan,et al.  DYNAMIC RESPONSE OF NON-UNIFORM COMPOSITE BEAMS , 1997 .