On the Implementation of augmented Lagrangian method in the two-dimensional discontinuous deformation Analysis

2013 ◽  
Vol 38 (6) ◽  
pp. 551-571 ◽  
Author(s):  
Huirong Bao ◽  
Zhiye Zhao ◽  
Qian Tian
Keyword(s):  
Augmented Lagrangian ◽  
Augmented Lagrangian Method ◽  
Lagrangian Method ◽  
Discontinuous Deformation Analysis ◽  
Deformation Analysis ◽  
Two Dimensional ◽  
Discontinuous Deformation

Numerical Simulation by DDA and the Fabrics Analysis of Two Dimensional Experiment on Coarse Granular Material

2012 ◽  
Vol 170-173 ◽  
pp. 3621-3629
Author(s):  
Pei Xi Guo ◽  
Shao Zhong Lin
Keyword(s):  
Numerical Simulation ◽  
Laboratory Test ◽  
Granular Material ◽  
Simulation Model ◽  
Mechanical Characteristics ◽  
Discontinuous Deformation Analysis ◽  
Deformation Analysis ◽  
Two Dimensional ◽  
Stress Strain ◽  
Discontinuous Deformation

DDA(Discontinuous Deformation Analysis) was used to study the mechanical characteristics of coarse granular material (CGM). The numerical simulation model was found consulting the two Dimensional test of CGM,and the stress-strain curves obtained by the numerical simulation were basically in agreement with the results of laboratory test. It indicates that the numerical simulation is suitable for the mechanical characteristic research of CGM. In addition,the distribution statistic of several fabric elements about interaction between particles was also presented. Some relation between the stress-strain and fabric element change are found after analysis.

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