中国物理B ›› 2013, Vol. 22 ›› Issue (6): 66301-066301.doi: 10.1088/1674-1056/22/6/066301

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

Complex force network in marginally and deeply jammed solids

胡茂彬, 姜锐, 吴清松   

  1. School of Engineering Science, University of Science and Technology of China, Hefei 230026, China
  • 收稿日期:2012-11-03 修回日期:2013-01-28 出版日期:2013-05-01 发布日期:2013-05-01
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 11034010).

Complex force network in marginally and deeply jammed solids

Hu Mao-Bin (胡茂彬), Jiang Rui (姜锐), Wu Qing-Song (吴清松)   

  1. School of Engineering Science, University of Science and Technology of China, Hefei 230026, China
  • Received:2012-11-03 Revised:2013-01-28 Online:2013-05-01 Published:2013-05-01
  • Contact: Hu Mao-Bin E-mail:humaobin@ustc.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 11034010).

摘要: This paper studies the force network properties of marginally and deeply jammed packings of frictionless soft particles from the perspective of complex network theory. We generate zero-temperature granular packings at different pressures by minimizing the inter-particle potential energy. The force networks are constructed as nodes representing particles and links representing normal forces between the particles. Deeply jammed solids show remarkably different behavior from marginally jammed solids in their degree distribution, strength distribution, degree correlation, and clustering coefficient. Bimodal and multi-modal distributions emerge when the system enters deep jamming region. The results also show that small and large particles can show different correlation behavior in this simple system.

关键词: jamming, complex networks, amorphous solids

Abstract: This paper studies the force network properties of marginally and deeply jammed packings of frictionless soft particles from the perspective of complex network theory. We generate zero-temperature granular packings at different pressures by minimizing the inter-particle potential energy. The force networks are constructed as nodes representing particles and links representing normal forces between the particles. Deeply jammed solids show remarkably different behavior from marginally jammed solids in their degree distribution, strength distribution, degree correlation, and clustering coefficient. Bimodal and multi-modal distributions emerge when the system enters deep jamming region. The results also show that small and large particles can show different correlation behavior in this simple system.

Key words: jamming, complex networks, amorphous solids

中图分类号:  (Glasses and amorphous solids)

  • 63.50.Lm
89.75.Hc (Networks and genealogical trees)