Buckling and post-buckling behavior of elliptical plates. Part 1. Analysis

Herzl Chai*

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review


A polynomial series expansion for displacements is used in conjunction with with Rayleigh-Ritz energy method to produce buckling and post-buckling stress solutions for an elliptically-shaped surface layer that has been delaminated from the main load-bearing body. Plate deformations are induced by a combined in-plane displacement field applied to the plate boundary and normal pressure. Convergence of the plate solution is assessed by systematically increasing the number of displacement terms in the series expansion. The convergence of membrane and bending stresses at the plate boundary was generally slow and nonuniform. The degrees-of-freedom necessary for a satisfactory solution typically increase with increasing complexity or magnitude of the plate deformations. By employing as many as 77 displacement terms, practically exact stress solutions are obtained for a wide variety of basic delamination plate problems. The proposed solution procedure is highly efficient and economical, and it may be easily extended to other plate geometries or loading conditions.

Original languageEnglish
JournalAmerican Society of Mechanical Engineers (Paper)
StatePublished - 1990
Externally publishedYes
EventProceedings of the Winter Annual Meeting - Dallas, TX, USA
Duration: 25 Nov 199030 Nov 1990


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