Abstract
The irreversible behaviour of crushable sands is investigated by means of a Discrete Element Method (DEM) analogue. The calculations have been performed using a recently developed procedure to simulate particle crushing that significantly enhances the computational efficiency of the method. The DEM analogue is subjected to a comprehensive set of stress probes in the triaxial plane in order to identify the basic mechanisms contributing to the total deformation. Three contributions to incremental strains are distinguished: elastic, plastic-structural and plastic-crushing. The behaviour observed appears to be consistent with the classic tenets of elasto-plasticity. The plastic mechanisms associated with fabric changes and with crushing are, however, different. In addition, the plastic flows for the two mechanism do not follow the normality rule. The same type of behaviour has been obtained under a wide variety of stress conditions and stress levels.
| Original language | English |
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| Title of host publication | Proceedings of the 15th International Conference of the International Association for Computer Methods and Advances in Geomechnics |
| Place of Publication | Wuhan, China |
| Pages | 1109-1114 |
| Number of pages | 6 |
| Publication status | Published - Oct 2017 |
| Event | 15th International Conference of the International Association for Computer Methods and Advances in Geomechanics, IACMAG 2017 - Wuhan, China Duration: 19 Oct 2017 → 23 Oct 2017 |
Conference
| Conference | 15th International Conference of the International Association for Computer Methods and Advances in Geomechanics, IACMAG 2017 |
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| Country/Territory | China |
| City | Wuhan |
| Period | 19/10/17 → 23/10/17 |
Keywords
- Discrete element method
- Granular materials
- Behaviour irreversibility
- Particle crushing
ASJC Scopus subject areas
- Geotechnical Engineering and Engineering Geology
- Applied Mathematics