A general formulation of hypoplasticity

A general formulation of the theory of hypoplasticity is given, under the assumption that Cauchy stress is the only state variable. Such a formulation allows to discuss the relation between the so‐called out‐of‐axis and in‐axis moduli. It is proved that, in general, the out‐of‐axis moduli are indepe...

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Published inInternational journal for numerical and analytical methods in geomechanics Vol. 28; no. 15; pp. 1461 - 1478
Main Authors Lanier, J., Caillerie, D., Chambon, R., Viggiani, G., Bésuelle, P., Desrues, J.
Format Journal Article
LanguageEnglish
Published Chichester, UK John Wiley & Sons, Ltd 25.12.2004
Subjects
constitutive equations
hypoplasticity
objectivity
shear moduli
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Summary:A general formulation of the theory of hypoplasticity is given, under the assumption that Cauchy stress is the only state variable. Such a formulation allows to discuss the relation between the so‐called out‐of‐axis and in‐axis moduli. It is proved that, in general, the out‐of‐axis moduli are independent from the in‐axis moduli, which allows the former to be calibrated making use of experimental shear band data, as it is done in CLoE‐hypoplasticity. The implicit assumptions made in K‐hypoplasticity are detailed for two particular models of this family. Copyright © 2004 John Wiley & Sons, Ltd.
Bibliography:ArticleID:NAG394
ark:/67375/WNG-KLP6V8RB-K
istex:C82CEF95C97358BA29325632F86BA61285B61D31
ISSN:0363-9061
1096-9853
DOI:10.1002/nag.394