Eigenvalue analysis of curved sandwich panels loaded in uniaxial compression
Keywords:curved panels, sandwich panels, composite structures
An energy formulation of a simply supported cylindrically curved sandwich panel loaded in compression is introduced and the corresponding potential energy function is evaluated. The mechanical model of a cylindrically curved sandwich panel comprises three interacting buckling modes, corresponding to nine degrees of freedom comprising qs, qx and qy components of local snake (m, n) and overall (k, l) modes, the related local hourglass (m, n) mode, Finally, closed-form solutions are presented for the global and local buckling modes.
SIMOES DA SILVA, L., Interactive Bending and Buckling in Sandwich Structures, PhD Thesis, Imperial College, 1989.
HUNT, G.W., SIMOES DA SILVA, L. and MANZOCCHI, G.M.E., Interactive Buckling in Sandwich Structures, Proceedings of the Royal Society of London, A 417, pp. 155–177, 1988.
SIMOES DA SILVA, L. and HUNT, G.W., Interactive Buckling in Sandwich Structures with Core Orthotropy, Mechanics of Structures and Machines, 18, 3, pp. 61–80, 1990.
ALLEN, H. G., Analysis and Design of Structural Sandwich Panels, Pergammon Press, 109, 6, 1460–1471, 1969.
BRUSH, D. O. and ALMROTH, B. O., Buckling of Bars, Plates and Shells, McGraw Hill, New York, 1975.
REDDY, J. N., Mechanics of Laminated composite plates and shells – Theory and analysis, CRC Press, Florida, 2004.
THOMPSON, J. M. T. and HUNT, G. W., A general theory of elastic stability, Wiley, 1973, London.
*** WOLFRAM MATHEMATICA 8 (version 8.0.0).
Copyright (c) 2020 The Romanian Journal of Technical Sciences. Applied Mechanics.
This work is licensed under a Creative Commons Attribution 4.0 International License.