Abstract
We computationally study the micromechanics of shear-induced size segregation and propose distinct migration mechanisms for individual large and small particles. While small particles percolate through voids without enduring contacts, large particles climb under shear through their crowded neighborhoods with anisotropic contact network. Particle rotation associated with shear is necessary for the upward migration of large particles. Segregation of large particles can be suppressed with inadequate friction, or with no rotation; increasing interparticle friction promotes the migration of large particles, but has little effect on the percolation of small particles. © 2017 American Physical Society.
| Original language | English |
|---|---|
| Article number | 118001 |
| Journal | Physical Review Letters |
| Volume | 118 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 15 Mar 2017 |
| Externally published | Yes |
Bibliographical note
Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].Funding
The work was supported by Research Grants Council of Hong Kong (Grant No. 17203614) and the Research Institute for Sustainable Urban Development at the Hong Kong Polytechnic University. This research is conducted in part using the research computing facilities and advisory services offered by Information Technology Services, the University of Hong Kong.
RGC Funding Information
- RGC-funded
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