Modelling the time‐dependent behaviour of granular material with hypoplasticity |
| |
| Authors: | Shun Wang Wei Wu Zhen‐Yu Yin Chong Peng Xuzhen He |
| |
| Affiliation: | 1. Institute of Geotechnical Engineering, University of Natural Resources and Life Sciences, Vienna, Austria;2. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Department of Geotechnical Engineering, College of Civil Engineering, Tongji University, Shanghai, China;3. Ecole Centrale de Nantes, GeM UMR CNRS, LUNAM University, Nantes, France;4. Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong |
| |
| 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. |
| |
| Keywords: | creep critical state granular material hypoplasticity rate dependent strain acceleration |
|
|
