Abstract
This paper presents a constitutive model for time-dependent behaviour of granular material. The model consists of 2 parts representing the inviscid and viscous behaviour of granular materials. The inviscid part is a rate-independent hypoplastic constitutive model. The viscous part is represented by a rheological model, which contains a high-order term denoting the strain acceleration. The proposed model is validated by simulating some element tests on granular soils. Our model is able to model not only the non-isotach behaviour but also the 3 creep stages, namely, primary, secondary, and tertiary creep, in a unified way.
| Original language | English |
|---|---|
| Pages (from-to) | 1331-1345 |
| Number of pages | 15 |
| Journal | International Journal for Numerical and Analytical Methods in Geomechanics |
| Volume | 42 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 25 Aug 2018 |
Keywords
- creep
- critical state
- granular material
- hypoplasticity
- rate dependent
- strain acceleration
ASJC Scopus subject areas
- Computational Mechanics
- General Materials Science
- Geotechnical Engineering and Engineering Geology
- Mechanics of Materials