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Selected Publication:

Lin, J; Wu, W.
(2016): Asymmetry of the stress tenor in granular materials
POWDER TECHNOL. 2016; 293: 113-120. FullText FullText_BOKU

Abstract:
One of the basic assumptions of the micropolar theory is that the stress tensor is not symmetric. In this paper, asymmetry of the stress tensor is studied with discrete element method and averaging method. The change of the skew symmetric part of an asymmetric tensor with the rotation of the coordinate system is shown graphically. Averaging method is used to obtain stress tensor from a DEM simulation of biaxial test. Stress asymmetries at different locations, scales and time steps are studied. The importance of the asymmetric stress for setting up a constitutive model for granular materials is discussed. (C) 2015 Elsevier B.V. All rights reserved.
Authors BOKU Wien:
Lin Jia
Wu Wei

Find related publications in this database (Keywords)
Stress asymmetry
DEM
Averaging method
Micropolar theory
Characteristic length


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