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A comparison between the Perzyna viscoplastic model and the Consistency viscoplastic model

✍ Scribed by Otto M. Heeres; Akke S.J. Suiker; René de Borst

Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
155 KB
Volume
21
Category
Article
ISSN
0997-7538

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✦ Synopsis

The elastic-viscoplastic characteristics of the Perzyna model and the Consistency model are considered. Both theories are compared by assessing the evolution of the viscoplastic multiplier, the evolution of the internal variables and the loading/unloading conditions. An explicit expression is derived for the consistency parameter in the Consistency model. Accordingly, it is shown that the Consistency model and the Perzyna model can be treated in a novel, unified algorithmic fashion. Illustrative numerical examples are given to reveal the differences and the similarities between the models, and to elucidate the features of the proposed implicit numerical scheme.  2002 Éditions scientifiques et médicales Elsevier SAS. All rights reserved.

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