Abstract
The paper aims to investigate modelling the strain-rate-dependency of natural soft clays combined with anisotropy and destructuration using an elasto-viscoplastic model. The model is based on Perzyna’s overstress theory and the elastoplastic model S-CLAY1S. Tests at constant strain-rate and creep tests under both one-dimensional and triaxial conditions on several clays are simulated. Simulations highlight the loading scenarios in which it is necessary to account for anisotropy and/or destructuration in order to get accurate predictions. Comparisons between the predicted and measured results demonstrate that the proposed model can successfully reproduce the time-dependent behaviour of natural soft clays under different loading conditions.
| Original language | English |
|---|---|
| Pages (from-to) | 216-230 |
| Number of pages | 15 |
| Journal | Acta Mechanica Solida Sinica |
| Volume | 24 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Jun 2011 |
Keywords
- anisotropic materials
- creep
- time-dependent
- debonding
- strain-rate dependency
- natural
- soft clays
- anisotropy
- destructuration