AUTHOR=Hua Yunsong , Xin Yujiao , Dai Hongyang , Yang Hui , Chi Zhipeng , Li Ran 

TITLE=Study on the stability of particle packing structure based on cells

JOURNAL=Frontiers in Physics

VOLUME=Volume 10 - 2022

YEAR=2022

URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2022.994121

DOI=10.3389/fphy.2022.994121

ISSN=2296-424X

ABSTRACT=Packing structure determines the macroscopic mechanical property and the stability of granular mechanics system. Cells play a fundamental role in granular statistical mechanics. Cells were utilized in this paper to research the packing structure of disk particles and gear particles in a two-dimensional silo. The probability distribution of cell order satisfies the exponential function distribution and is independent of intergranular friction, the size of system and vibration. Furthermore, it is observed that friction and system size are the key factors affecting the stability of particle packing structure. Significantly, the relationship between volume fraction and packing structure of disk particles is established under vibration. The experimental results reveal the structural characteristics of ordered packing in disordered particle system in mesoscale, and provide data reference for perfecting the theory of particle mechanics.