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A comparison of incremental behaviour of elastoplastic and CLoE models

✍ Scribed by Chambon, René; Caillerie, Denis; Desrues, Jacques; Crochepeyre, Stéphane

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
170 KB
Volume
23
Category
Article
ISSN
0363-9061

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✦ Synopsis

A comparison between two classes of constitutive equations is presented. The comparison is based on two models, namely the classical bi-linear elastoplastic Von Mises model and an incrementally non linear model previously proposed by the authors (called CLoE model). Both models exhibit the same behaviour for isotropic and deviatoric loading paths. Gudehus' diagram, inversibility, second order work and shear band localization criteria are comparatively analysed. As a result the two constitutive equations share some similarities but the CLoE model gives a more appropriate and flexible description of shear band formation.

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