Discussion: “New First-Order Shear Deformation Plate Theories” (, , and , 2007, ASME J. Appl. Mech., 74, pp. 523–533) PUBLIC ACCESS

[+] Author and Article Information
J. G. Simmonds

Department of Civil Engineering, University of Virginia, Charlottesville, VA 22904-4742jgs@virginia.edu

J. Appl. Mech 75(4), 045503 (May 20, 2008) (1 page) doi:10.1115/1.2916894 History: Received August 04, 2007; Revised December 28, 2007; Published May 20, 2008

This paper joins a host of others, beginning with the seminal papers of Reissner (1-2), that attempt to improve the accuracy of classical (Kirchhoff) plate theory without a concomitant refinement of the classical boundary conditions—a refinement that necessitates using the equations of three-dimensional elasticity to examine edge layers whose thicknesses are of the order of the plate thickness. Without such a refinement, improvements to Kirchhoff’s theory are, in general, illusory, as many authors over the past 50years have emphasized, especially Goldenveiser. See, for example, Refs. 3-9, where many other relevant references will be found.

Often, authors of “improved” plate theories compare solutions of their equations under simple support either to other theories or to exact three-dimensional elasticity solutions. However, because such solutions are mathematically equivalent to those of an infinite plate under periodic surface loads, no edge layers arise so that such comparisons are virtually useless.


Copyright © 2008 by American Society of Mechanical Engineers
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