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RESEARCH PAPERS

A Rate-Dependent Inelastic Constitutive Model—Part I: Elastic-Plastic Flow

[+] Author and Article Information
F. Ellyin, Z. Xia

Department of Mechanical Engineering, University of Alberta, Edmonton, Alberta, Canada T6G 2G8

J. Eng. Mater. Technol 113(3), 314-323 (Jul 01, 1991) (10 pages) doi:10.1115/1.2903412 History: Received January 08, 1990; Revised July 25, 1990; Online April 29, 2008

Abstract

In this part a rate-dependent elastic-plastic constitutive model is presented which is an extension of our earlier rate-indpendent model. The effect of prior creep on the subsequent inelastic deformation is also included. The model can be used to predict inelastic processes with variable strain (stress) rates. It is shown, through comparison with the experimental results, that most of the rate-effect features of the material response can be simulated by the model. Despite the wide range of application, the model is relatively simple and incorporated a few material constants which could be easily determined from standard tests.

Copyright © 1991 by The American Society of Mechanical Engineers
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