A Modified CamClay Constitutive Model Based on Thermodynamic Approach
- DOI
- 10.2991/icmce-14.2014.76How to use a DOI?
- Keywords
- Granular Material, Anisotropy, Dilatancy Relationship.
- Abstract
Mechanical behavior of granular media is important in many fields of studies such as the deformation of soil, slope stability, or the bearing capacity and so on. The mechanical behavior of granular media has been studied by borrowing the stress-strain models, such as elastic, elasto-plastic, or plastic models, developed for continuum materials. The aim of this research is to develop a constitutive equation taking into account the fabric tensors and their evolution modes. A modified Camclay constitutive model is effectively used, and link modern ideas of thermomechanics to void fabric tensors. After discussing the relationship between essential independent variables in constitutive equations and the state of granular materials from a viewpoint of the evolution mode of the void fabric tensors, the results show that granular materials can show less symmetry (more anisotropic). Moreover, the stress-strain relationship predicted by modified model is compared with the drained triaxial tests under the different consolidation pressures in order to assess the predictive capability. In each case good agreement with experiment is obtained.
- Copyright
- © 2014, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Xiao-Xia GUO PY - 2014/12 DA - 2014/12 TI - A Modified CamClay Constitutive Model Based on Thermodynamic Approach BT - Proceedings of the 2014 International Conference on Mechanics and Civil Engineering PB - Atlantis Press SP - 441 EP - 445 SN - 2352-5401 UR - https://doi.org/10.2991/icmce-14.2014.76 DO - 10.2991/icmce-14.2014.76 ID - GUO2014/12 ER -