Global Stress-Strain Behavior of Perforated Plate

[+] Author and Article Information
F. P. J. Rimrott

University of Toronto, Toronto, Ontario, Canada M5S 1A4

A. Singh

Power Projects, Atomic Energy of Canada Ltd.

J. Mech. Des 102(2), 255-263 (Apr 01, 1980) (9 pages) doi:10.1115/1.3254739 History: Received August 01, 1979; Online November 17, 2009


The present paper establishes and interprets the global uniaxial stress-strain behavior of regularly perforated plate, throughout the elastic, partly plastic, and fully plastic regimes up to fracture, as function of hole size and number. The elastic part of the stress-strain curve is described by means of an effective modulus of elasticity which is obtained by using the strain energy stored in the plate. During the partly plastic range, perforated plate response has been found to be governed essentially by the remaining elastic portion and consequently appears as part of the elastic behavior. Beyond global yield point, the material is nearly perfectly plastic for a large range of strains and upper and lower limits of collapse load are calculated by using upper and lower-bound techniques for a perfectly plastic material. Experiments were conducted and serve as the basis for the theoretical interpretation.

Copyright © 1980 by ASME
Topics: Stress
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