Cyclic Viscoplastic Constitutive Equations, Part II: Stored Energy—Comparison Between Models and Experiments

[+] Author and Article Information
J.-L. Chaboche

ONERA, 29, av. de la Division Leclerc, 92322 Chatillon, France

J. Appl. Mech 60(4), 822-828 (Dec 01, 1993) (7 pages) doi:10.1115/1.2900990 History: Received January 03, 1991; Revised August 17, 1993; Online March 31, 2008


The cyclic constitutive equations developed at ONERA have been incorporated into a general thermodynamic framework (Part I). In the present part, systematic comparisons are given between the model predictions and experimental data for both the mechanical response and the energy stored in the material. The models are specified in their rate—independent-form and closed-form solutions are obtained for tension-compression monotonic and cyclic conditions. By superposing one or two nonlinear kinematic rules and one isotropic hardening equation, the available experimental data are fairly well reproduced. In particular it is possible to describe the low values of stored energy, the decrease of the ratio of stored energy to total plastic work as a function of strain, and the partial release of stored energy at every half cycle of a cyclic loading.

Copyright © 1993 by The American Society of Mechanical Engineers
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