scholarly journals Plastic Flow of Granular Media under the Principal Stress Axes Rotation

2002 ◽  
Vol 5 ◽  
pp. 441-450
Author(s):  
Kenji KANEKO ◽  
Tateki ISHII ◽  
Wataru NARUMI ◽  
Yuji KISHINO
Keyword(s):  
Principal Stress ◽  
Plastic Flow ◽  
Granular Media ◽  
Principal Stress Axes Rotation

Denisty variation inpseudo-steady plastic flow of granular media

Géotechnique ◽  
1984 ◽  
Vol 34 (1) ◽  
pp. 1-10 ◽  
Author(s):  
A. Drescher ◽  
R. L. Michalowski
Keyword(s):  
Plastic Flow ◽  
Granular Media

Effect of Interparticle Friction on the Micromechanical Strength Characteristics of Three Dimensional Granular Media

2015 ◽  
Vol 16 ◽  
pp. 79-89
Author(s):  
Karinate Valentine Okiy
Keyword(s):  
Shear Strength ◽  
Principal Stress ◽  
Coordination Number ◽  
Granular Media ◽  
Three Dimensional ◽  
Contact Forces ◽  
Strength Characteristics ◽  
Fabric Anisotropy ◽  
Granular Assemblies ◽  
Interparticle Friction

The role of interparticle friction on the micromechanical strength characteristics of granular assembly subjected to gradual shearing was analyzed. Three dimensional discrete element method (DEM) was applied in the simulation of quasi-static shearing of granular assemblies with varying interparticle frictional coefficients [µ= 0.10, 0.25, 0.50]. From the reported simulation results, analysis of the following was performed for varying interparticle frictional capacities.i. The normal and tangential stress contributions of weak and strong contacts to principal stress components.ii. Contribution of strong and weak contacts to principal and deviator stress.iii. Evolution of mechanical coordination number and fabric anisotropy of strong contact forces.From this analysis, it is safe to conclude that interparticle friction has a direct effect on the major and minor principal stress components in sheared granular assemblies. Consequently, increasing interparticle friction capacity enhances macroscopic shear strength in sheared granular assemblies. Likewise, at the peak shear strength of the sheared granular media, there exists a maximum fabric anisotropy of strong contact forces and this corresponds to a minimum value of mechanical coordination number (minimum possible number of load bearing contacts per particle).

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