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| Titel: |
A critical state framework for modelling bonded geomaterials |
| Auteur: |
Yu, H. S. Tan, S. M. Schnaid, F. |
| Verschenen in: |
Geomechanics and Geoengineering |
| Paginering: | Jaargang 2 (2007) nr. 1 pagina's 61-74 |
| Jaar: |
2007-03 |
| Inhoud: |
A simple unified critical state constitutive model for bonded geomaterials is presented in this paper. The model, which is called CASM-n, is an enhancement of an existing unified critical state model for reconstituted geomaterials (CASM). Characteristic behaviours of a bonded geomaterial such as the pre-yield higher strength and stiffness and the cohesive-frictional shearing mode in the post-yield region are taken into account and included in the reference model. The salient feature of the proposed model is the incorporation of cohesive component into the stress-dilatancy relationship. Consideration of the contribution of cohesion to plastic flow allows the modelling of delayed dilatancy and softening-contraction behaviour, which are two interesting phenomena observed in bonded geomaterials. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
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