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The buckling of honeycomb sandwich circular rings

Published online by Cambridge University Press:  04 July 2016

A. K. El-Senussi  and
J. P. H. Webber
A. K. El-Senussi
Affiliation:
Department of Aeronautical EngineeringUniversity of Bristol
J. P. H. Webber
Affiliation:
Department of Aeronautical EngineeringUniversity of Bristol
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Extract

A theoretical solution is given for the overall buckling and wrinkling of sandwich circular rings when subjected to a uniform radial pressure loading. The core is in the form of a honeycomb material, and the faces can be made from laminated fibre reinforced plastics, which exhibit coupling between bending and stretching. The elasticity equations for both the orthotropic core and faces are satisfied, and it is found that the problem is governed by four simultaneous differential equations for the displacements of the faces. A solution is obtained by assuming simple sine and cosine functions for these displacements. Minimum critical pressures are found numerically and results are given which show the dependence on face thickness, core thickness and mean radius. A procedure is suggested for finding approximate solutions for sandwich rings subjected to more general loading conditions.

Type
Research Article
Information
The Aeronautical Journal , Volume 88 , Issue 876 , July 1984 , pp. 249 - 256
Copyright
Copyright © Royal Aeronautical Society 1984 

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References

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