Dynamics of quasi-static collapse process of a binary granular column

被引：5

作者：

Zhu, Hongwei ^{[1
]}

Feng, Yaodong ^{[1
,2
]}

Lu, Danfeng ^{[1
,3
]}

Sandali, Yahya ^{[1
]}

Li, Bin ^{[1
]}

Sun, Gang ^{[2
]}

Zheng, Ning ^{[1
]}

Shi, Qingfan ^{[1
]}

机构：

[1] Beijing Inst Technol, Sch Phys, Beijing 100081, Peoples R China

[2] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Key Lab Soft Matter Phys, Beijing 100190, Peoples R China

[3] JiangSu North Huguang Optoelect CO Ltd, Opt Ctr, Wuxi 214035, Peoples R China

来源：

POWDER TECHNOLOGY | 2018年 / 339卷

基金：

美国国家科学基金会;

关键词：

Granular materials; Collapse process; Dynamical behavior; Granular column; DEM; REPOSE; MODELS; ANGLE; FLOW;

D O I：

10.1016/j.powtec.2018.08.051

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The dynamical behavior of the column that made up binary granular beads is investigated systematically by tracking the displacement of particles in the collapse process. An experimental setup is first devised to control the quasi-static collapse of a granular column, and then observe the trajectories of tracer particles by using an industrial camera controlled by the image acquisition program. It is found that there exist two zones in column: a sliding region in which particles are moving in a layered structure: a static region within which particles are stationary. According to this analytical result, a dynamical model is developed to predict the trajectory evolution of particles in the space-time. The calculating result for the trajectories of particles on the selected layers is well consistent with the experimental observation. (C) 2018 Published by Elsevier B.V.

引用

页码：970 / 973

页数：4

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