scholarly journals Coupled tomography and distinct-element-method approach to exploring the granular media microstructure in a jamming hourglass

2008 ◽  
Vol 77 (6) ◽  
Author(s):  
M. Tsukahara ◽  
S. Mitrovic ◽  
V. Gajdosik ◽  
G. Margaritondo ◽  
L. Pournin ◽  
...  
Keyword(s):  
Granular Media ◽  
Distinct Element ◽  
Distinct Element Method ◽  
Method Approach ◽  
Element Method

Mechanics of Nanocrystalline Particles With the Distinct Element Method

2015 ◽  
Vol 137 (2) ◽  
Author(s):  
Igor Ostanin ◽  
Yuezhou Wang ◽  
Yuxiang Ni ◽  
Traian Dumitricǎ
Keyword(s):  
Granular Media ◽  
Experimental Testing ◽  
Distinct Element ◽  
Peak Stress ◽  
Distinct Element Method ◽  
Nanocrystalline Particles ◽  
Testing Data ◽  
Nanocrystalline Structures ◽  
Contact Models ◽  
Element Method

In geomechanics and civil engineering, the distinct element method (DEM) is employed in a top-down manner to simulate problems involving mechanics of granular media. Because this particle-based method is well adapted to discontinuities, we propose here to adapt DEM at the mesoscale in order to simulate the mechanics of nanocrystalline structures. The modeling concept is based on the representation of crystalline nanograins as mesoscopic distinct elements. The elasticity, plasticity, and fracture processes occurring at the interfaces are captured with contact models of interaction between elements. Simulations that rely on the fitting of the peak stress, strain, and failure mode on the experimental testing of Au and CdS hollow nanocrystalline particles illustrate the promising potential of mesoscopic DEM for bridging the atomistic-scale simulations with experimental testing data.

scholarly journals High-Speed Computation of Distinct Element Method by Pipelined Processors.

2001 ◽  
Vol 67 (662) ◽  
pp. 1595-1602
Author(s):  
Masanobu MIZOGUCHI ◽  
Masaharu TANAKA ◽  
Mayumi OCHI ◽  
Hideyuki SETO ◽  
Toshio FUKUDA
Keyword(s):  
High Speed ◽  
Distinct Element ◽  
Distinct Element Method ◽  
Pipelined Processors ◽  
Element Method
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