The University of Massachusetts Amherst
University of Massachusetts Amherst

Search Google Appliance


Stress and fabric in granular material

TitleStress and fabric in granular material
Publication TypeJournal Article
Year of Publication2013
AuthorsChang CS, Liu Y
JournalTheoretical and Applied Mechanics Letters
Start Page021002-1
Date Published01/2013
Keywordsdiscrete element method, force fabric tensor, granular material, material fabric tensor, stress tensor

It has been well recognized that, due to anisotropic packing structure of granular material, the true stress in a specimen is different from the applied stress. However, very few research efforts have been focused on quantifying the relationship between the true stress and applied stress. In this paper, we derive an explicit relationship among applied stress tensor, material-fabric tensor, and force-fabric tensor; and we propose a relationship between the true stress tensor and the applied stress tensor. The validity of this derived relationship is examined by using the discrete element simulation results for granular material under biaxial and triaxial loading conditions.