Granite Yield Strength and Post-Yield Damage based on Plasticity

N.A. Chandler

In the proceedings of: GeoManitoba 2012: 65th Canadian Geotechnical Conference

Session: W2B - Rock Mechanics

ABSTRACT: Triaxial compression data from tests on granite displayed attributes of traditional elastic-plastic behaviour. This paper summarises a simple approach for obtaining long-term strength from these short-term tests. The derivation of properties used to define both rock strength and microcrack-induced dilation, which were independent of either loading rate or stress history, is described. The results of numerical analyses of rock failure and rock damage using unmodified elastic-plastic constitutive models currently available in commercial engineering analysis software are presented.

RÉSUMÉ: Les données de tests de compression triaxiale sur granit démontrent des attributs traditionnels d'élasto-plastique. De façon simple, ce rapport résume une méthode d'obtenir une force à long terme en utilisant ces tests à court terme. La dérivation des propriétés pour définir la force de la pierre et dilatation induite par la microfissure, qui sont indépendantes du taux de chargement et du stress, est décrite. rupture de roche et les dommages de roche utilisant des modèles constitutive élasto-plastique non modifiées qui sont actuellement disponibles dans le logiciel d'analyse technique commerciale sont présentés.

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Cite this article:
N.A. Chandler (2012) Granite Yield Strength and Post-Yield Damage based on Plasticity in GEO2012. Ottawa, Ontario: Canadian Geotechnical Society.

@article{Paper140,author = N.A. Chandler,title = Granite Yield Strength and Post-Yield Damage based on Plasticity,year = 2012}