The effect of width on the buckling and free vibration of laminated beams
- Univ. of Dayton, OH (United States)
The effect of length-to-width ratio and width-to-thickness ratio on the response of anisotropic laminated beams is investigated. The parameters under consideration are the critical buckling load under uniaxial compression, and the fundamental free vibration frequency. Using a Levy type analysis, exact solutions are obtained for the case of specially ortho tropic thin plates with two opposite edges simply-supported and the two adjacent edges free. Minimum length-to-width ratios compatible with one-dimensional beam assumptions are established for laminates having a high major Poisson`s ratio under bending. In order to consider angle-ply laminates within the framework of specially ortho tropic plates, stacking geometries with very weak bending-twisting coupling are investigated. By considering additional boundary conditions for the adjacent sides, it is illustrated that beam theory results can be recovered only for the case of free-boundaries. The effect of cross-section width is investigated by considering long narrow plates with various width-to-thickness ratios. In this case it is necessary to modify the thin plate theory to include transverse shear deformation in the width direction.
- OSTI ID:
- 89791
- Report Number(s):
- CONF-9409291-; ISBN 1-56676-220-0; TRN: IM9536%%221
- Resource Relation:
- Conference: 9. technical conference of the American Society for Composites, Newark, DE (United States), 20-22 Sep 1994; Other Information: PBD: 1994; Related Information: Is Part Of Proceedings of the American Society for Composites: Ninth technical conference; PB: 1319 p.
- Country of Publication:
- United States
- Language:
- English
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