期刊
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
卷 57, 期 4, 页码 706-727出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jmps.2009.01.005
关键词
Force chains; Buckling; Granular materials; Energy methods; Microstructure
资金
- Australian Research Council [DP0558808, DP0772409]
- US Army Research Office [W911NF-07-1-0370]
- Pratt Foundation
- Australian Research Council [DP0558808] Funding Source: Australian Research Council
Buckling of force chains, laterally confined by weak network particles, has long been held as the underpinning mechanism for key instabilities arising in dense, cohesionless granular assemblies, e.g. shear banding and slip-stick phenomena. Despite the demonstrated significance of this mechanism from numerous experimental and discrete element studies, there is as yet no model for the confined buckling of force chains. We present herein the first structural mechanical model of this mechanism. Good agreement is found between model predictions and confined force chain buckling events in discrete element simulations. A complete parametric analysis is undertaken to determine the effect of various particle-scale properties on the stability and failure of force chains. Transparency across scales is achieved, as the mechanisms on the microscopic and mesoscopic domains, which drive well-known macroscopic trends in biaxial compression tests, are elucidated. (C) 2009 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据