2020年6月18日
Shear Thickening and Jamming of Dense Suspensions: The “Roll” of Friction
Physical Review Letters
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- 巻
- 124
- 号
- 24
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/PhysRevLett.124.248005
- 出版者・発行元
- AMER PHYSICAL SOC
Particle-based simulations of discontinuous shear thickening (DST) and shear jamming (SJ) suspensions are used to study the role of stress-activated constraints, with an emphasis on resistance to gearlike rolling. Rolling friction decreases the volume fraction required for DST and SJ, in quantitative agreement with real-life suspensions with adhesive surface chemistries and "rough" particle shapes. It sets a distinct structure of the frictional force network compared to only sliding friction, and from a dynamical perspective leads to an increase in the velocity correlation length, in part responsible for the increased viscosity. The physics of rolling friction is thus a key element in achieving a comprehensive understanding of strongly shear-thickening materials.
- リンク情報
- ID情報
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- DOI : 10.1103/PhysRevLett.124.248005
- ISSN : 0031-9007
- eISSN : 1079-7114
- ORCIDのPut Code : 75931407
- Web of Science ID : WOS:000540915100008