中国物理B ›› 2018, Vol. 27 ›› Issue (6): 66102-066102.doi: 10.1088/1674-1056/27/6/066102

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

Jamming of packings of frictionless particles with and without shear

Wen Zheng(郑文), Shiyun Zhang(张世允), Ning Xu(徐宁)   

  1. Hefei National Laboratory for Physical Sciences at the Microscale, Key Laboratory of Soft Matter Chemistry of Chinese Academy of Sciences, and Department of Physics, University of Science and Technology of China, Hefei 230026, China
  • 收稿日期:2018-03-06 修回日期:2018-04-04 出版日期:2018-06-05 发布日期:2018-06-05
  • 通讯作者: Ning Xu E-mail:ningxu@ustc.edu.cn
  • 作者简介:Wen Zheng,E-mail:wenzheng@ustc.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos.11702289,11734014,and 11574278) and the Anhui Provincial Natural Science Foundation (Grant No.1708085QA07).

Jamming of packings of frictionless particles with and without shear

Wen Zheng(郑文), Shiyun Zhang(张世允), Ning Xu(徐宁)   

  1. Hefei National Laboratory for Physical Sciences at the Microscale, Key Laboratory of Soft Matter Chemistry of Chinese Academy of Sciences, and Department of Physics, University of Science and Technology of China, Hefei 230026, China
  • Received:2018-03-06 Revised:2018-04-04 Online:2018-06-05 Published:2018-06-05
  • Contact: Ning Xu E-mail:ningxu@ustc.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos.11702289,11734014,and 11574278) and the Anhui Provincial Natural Science Foundation (Grant No.1708085QA07).

摘要:

By minimizing the enthalpy of packings of frictionless particles, we obtain jammed solids at desired pressures and hence investigate the jamming transition with and without shear. Typical scaling relations of the jamming transition are recovered in both cases. In contrast to systems without shear, shear-driven jamming transition occurs at a higher packing fraction and the jammed solids are more rigid with an anisotropic force network. Furthermore, by introducing the macro-friction coefficient, we propose an explanation of the packing fraction gap between sheared and non-sheared systems at fixed pressure.

关键词: jamming, shear, macro-friction, force network

Abstract:

By minimizing the enthalpy of packings of frictionless particles, we obtain jammed solids at desired pressures and hence investigate the jamming transition with and without shear. Typical scaling relations of the jamming transition are recovered in both cases. In contrast to systems without shear, shear-driven jamming transition occurs at a higher packing fraction and the jammed solids are more rigid with an anisotropic force network. Furthermore, by introducing the macro-friction coefficient, we propose an explanation of the packing fraction gap between sheared and non-sheared systems at fixed pressure.

Key words: jamming, shear, macro-friction, force network

中图分类号:  (Structural modeling: serial-addition models, computer simulation)

  • 61.43.Bn
63.50.Lm (Glasses and amorphous solids) 61.43.-j (Disordered solids)