Lode's angle effect on the definition of the strength criterion of porous media

Summary This paper addresses the open question of the effect of the third invariant in the definition of the strength criterion of porous media. This is here achieved in the context of a porous medium made up of a solid phase, in which strength criterion appears as an explicit function of Lode'...

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Bibliographic Details
Published in:International journal for numerical and analytical methods in geomechanics 2015-10, Vol.39 (14), p.1506-1526
Main Authors: Lemarchand, Eric, Dormieux, Luc, Kondo, Djimedo
Format: Article
Language:English
Subjects:
Chemical Sciences
Criteria
Engineering Sciences
Gurson criterion
Invariants
Lode angle effect
Material chemistry
Mathematical analysis
Mathematical models
Mechanics
Media
micromechanics
Porous media
Solid phases
Strain rate
Strength
strength criterion
third invariant
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Summary:Summary This paper addresses the open question of the effect of the third invariant in the definition of the strength criterion of porous media. This is here achieved in the context of a porous medium made up of a solid phase, in which strength criterion appears as an explicit function of Lode's angle. Application is provided from the Gurson hollow sphere model for which the macroscopic strength exhibits a lack of symmetry for axisymmetric macroscopic strain rate loadings. Copyright © 2015 John Wiley & Sons, Ltd.
ISSN:0363-9061
1096-9853
DOI:10.1002/nag.2404