Constitutive Relations for the Nonelastic Deformation of Metals

[+] Author and Article Information
E. W. Hart

General Electric Co., Corporate Research and Development, Schenectady, N. Y.

J. Eng. Mater. Technol 98(3), 193-202 (Jul 01, 1976) (10 pages) doi:10.1115/1.3443368 History: Received July 07, 1975; Revised January 13, 1976; Online August 17, 2010


Constitutive relations for metal nonelastic deformation are proposed. The descriptiion is entirely in terms of real time strain rate. The equations are fully three-dimensional, and the description is incremental. Changes of loading direction are treated in a simple manner. The current deformation state of the metal is characterized by a set of state variables that themselves evolve by well defined laws. The experimental background for the theory is also described.

Copyright © 1976 by ASME
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