Sage Journals: Discover world-class research

Abstract

The damping characteristics of prestressed composite beams with con strained viscoelastic damping layers on one surface of the beam are investigated both ana lytically and experimentally. The analytical method involves derivation of finite element equations for the analysis of beam and plate structural elements with continuous or discon tinuous constrained viscoelastic damping layer with prestress. The experimental method is an impulse-frequency response technique which is used on preloaded laminated beams. Results for loss factors and natural frequencies of [90/90/0/90/90] and [90₃/0₃/90₃]_s T300/934 graphite-epoxy laminated beams with a 3M SJ-2052X constrained viscoelastic tape attached on one surface are presented. Numerical results based on the finite element prediction agree reasonably well with the experimental results under different tensile and compressive preloads.

Get full access to this article

View all access options for this article.

References

Bathe, K.J. 1982. Finite Element Procedures in Engineering Analysis. Englewood Cliffs, NJ:

Prentice-Hall, Inc.

Fung, Y.C. 1965. Foundation of Solid Mechanics. Englewood Cliffs, NJ:

Prentice-Hall, Inc.

Gibson, R.F. , L.R. Deobald and S.A. Suarez. 1985. "Laboratory Production of Discontinuous Aligned Composite Plates Using the Autoclave-Style Press Cure," Journal of Composites Technology and Research, 7(2):49-54.

Mantena, P.R. , R.F. Gibson and S.J. Hwang. 1989. "Optimal Constrained Viscoelastic Tape Lengths for Maximizing Damping in Lammated Composites," presented at Damping 89 Symposium, West Palm Beach, FL , Feb. 8-10.

Mantena, P.R. , T.A. Place and R.F. Gibson. 1985. "Characterization of Matrix Cracking in Composite Laminates by the Use of Damping Capacity Measurements," in Role of Interfaces on Material Damping. Park, OH: ASM International, pp. 79-94.

Nashif, A.D. , D.I.G. Jones and J.P. Henderson. 1985. Vibration Damping. New York: John Wiley.

Plunkett, R. 1983. "Damping Mechanism in Fiber Reinforced Laminates," Proceedings of IVTAM Conference on Advances in Composite Materials . Oxford: Pergamon, pp. 93-104.

Rao, V.S. 1991. "Finite Element Analysis of Viscoelastically Damped Composite Structures," Ph.D. dissertation, Department of Aerospace Engineering, Mechanics and Engmeering Science, University of Florida, Gainesville.

Sankar, B.V. 1991. "A Finite Element for Modeling Delaminations in Composite Beams," Computers and Structures, 38(2):239-246.

10.

Sato, K. , G. Shikanai and T. Tainaka. 1986. "Damping of Flexural Vibration of Viscoelastic Sandwich Beam Subjected to Axial Force," Bulletin of Japanese Society of Mechanical Engineers, 29(253): 2204-2210.

11.

Suarez, S.A. and R.F. Gibson. 1987. "Improved Impulse-Frequency Response Techniques for Measurement of Dynamic Mechanical Properties of Composite Materials ," Journal of Testing and Evaluation, 15(2):114-121.

12.

Suarez, S.A. , R.F. Gibson and L.R. Deobald. 1983. "Development of Experimental Techniques for Measurement of Damping in Composite Materials," Proceedings of the Society of Experimental Stress Analysis Meeting, Salt Lake City, UT, Nov. 6-10, pp. 55-60.

Analytical and Experimental Investigations of Prestressed Laminated Composite Beams with Constrained Viscoelastic Damping Layer

Abstract

Get full access to this article

References