Elastoplastic Buckling of Annular Plates in Pure Shear

[+] Author and Article Information
E. Ore, D. Durban

Technion–I.T.T., Haifa 32000, Israel

J. Appl. Mech 56(3), 644-651 (Sep 01, 1989) (8 pages) doi:10.1115/1.3176141 History: Received June 27, 1988; Revised October 14, 1988; Online July 21, 2009


A linear buckling analysis is presented for annular elastoplastic plates under shear loads. The standard plate buckling equations are used in conjunction with the small strain J 2 flow and deformation theories of plasticity. The main numerical finding is that deformation theory predicts critical loads which are considerably below the predictions obtained with the flow theory. Furthermore, comparison with experimental data for different metals shows a good agreement with the deformation theory results over a wide range of geometries. The limiting buckling problem of a long narrow panel under shear stresses is treated separately. This problem admits an exact solution and it is shown that the critical loads for the panel are approached asymtotically by the annular plate results. Contact is made with earlier studies on the buckling of elastic-orthotropic and elastoplastic shear panels.

Copyright © 1989 by ASME
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