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Micro-deformation mechanism of granular materials under different boundary conditions based on DEM simulation
TONG Zhaoxia * #,ZHOU Min,YAO Yangping
School of Transportation Science and Engineering, Beihang University
*Correspondence author
#Submitted by
Subject:
Funding: National Natural Science Foundation of China (No.10902005), Research Fund for the Doctoral Program of Higher Education of China (No.20091102120018)
Opened online: 1 March 2012
Accepted by: none
Citation: TONG Zhaoxia,ZHOU Min,YAO Yangping.Micro-deformation mechanism of granular materials under different boundary conditions based on DEM simulation[OL]. [ 1 March 2012] http://en.paper.edu.cn/en_releasepaper/content/4467605
 
 
Series of biaxial compression simulations are carried out to investigate the effects of boundary condition on the deformation of granular materials by using DEM. The parameters used in DEM are validated by the biaxial compression experiments on elliptical steel bars. The effects of boundary condition on the stress-strain relationship are analyzed. And special focus are put in the analysis of particle displacement, particle rotation, void distribution, particle long axis orientation and contact force with the development of deformation.
Keywords:Boundary condition; Micromechanics; Discrete element method (DEM); Granular material
 
 
 

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