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Some laminated plate optimum design studies using an interactive computer programme

Published online by Cambridge University Press:  04 July 2016

J. P. H. Webber*
Affiliation:
Department of Aerospace Engineering, University of Bristol

Summary

An interactive computer programme, based on linear-elastic laminated plate theory, is used to study the effect of lay-up geometry on first ply failure loads. A maximum allowable strain failure criterion is used and a number of design problems are considered where searches are made for optimum lay-up configurations for typical carbon fibre reinforced plastic properties. The relative weakness of this material in tension across the fibres, is found to have a significant effect on first ply failure loads. An optimisation technique based on principal load directions is introduced and compared with the familiar 0/90/±45 lay-up configuration.

Type
Research Article
Copyright
Copyright © Royal Aeronautical Society 1988 

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References

1. Ditcher, A. K. and Webber, J. P. H. Nonlinear mechanical and thermal responses of a unidirectional carbon-fibre-reinforced plastic. J Strain Anal 1979, 14, 149156.Google Scholar
2. Ditcher, A. K., Rhodes, F. E. and Webber, J. P. H. Non linear stress-strain behaviour of carbon fibre reinforced plastic laminates. J Strain Anal, 1981, 16, 4351.Google Scholar
3. Jones, R. M. Mechanics of Composite Materials. McGraw-Hill, 1975.Google Scholar
4. Webber, J. P. H. SSFALP - An interactive computer programme for the stress-strain failure analysis of laminated plates. Department of Aerospace Engineering, University of Bristol, 1986.Google Scholar
5. Baldwin, J. F. Support Logic Programming, Int J Intelligent Systems. 1986, 1, (2), 73104.Google Scholar
6. Park, W. J. An optimal design of simple symmetric laminates under the first ply failure criterion. J Compos Mater, 1982, 16, 341355.Google Scholar