Scipediacontent at 07:45, 20 July 2022

2022-07-20T07:45:06Z

Scipediacontent: Scipediacontent moved page Draft Content 696481000 to Ali et al 2022a

2022-07-06T15:36:12Z

Scipediacontent moved page Draft Content 696481000 to Ali et al 2022a

Scipediacontent: Created page with " == Abstract == Validation and/or calibration of distinct element method (DEM) models is usually performed by comparing element test simulation results with the corresponding..."

2022-07-06T15:36:09Z

Created page with " == Abstract == Validation and/or calibration of distinct element method (DEM) models is usually performed by comparing element test simulation results with the corresponding..."

New page

== Abstract ==

Validation and/or calibration of distinct element method (DEM) models is usually performed by comparing element test simulation results with the corresponding stress-strain relationships observed in the laboratory [1]. However, such a validation procedure performed at the macroscopic level does not ensure capturing the microscopic particle-level motion [2]. Thus, the reliability of the DEM model may be limited to some stress paths and may not hold when the material response becomes non-uniform for example when shear bands develop. In this study, the validity of the DEM is assessed by comparing the numerical result with experimental data considering both particle-scale behavior (including particle rotations) and macroscopic stress-strain characteristics observed in shearing tests on granular media. Biaxial shearing tests were conducted on bi-disperse granular assemblies composed of around 2700 circular particles under different confining pressures. Particle-level motions were detected by a novel image analysis technique. Particle rotations are observed to be a key mechanism for the deformation of granular materials. The results from this study suggest that to properly calibrate DEM models able to capture the mechanical behavior in a more realistic way particle scale motions observed in laboratory experiments along with macroscopic response are necessary.

<pdf>Media:Draft_Content_696481000-459_paper-8913-document.pdf</pdf>

== Document ==
<pdf>Media:Draft_Content_696481000-459_paper-1175-document.pdf</pdf>

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 <pdf>Media:Draft_Content_696481000-459_paper-8913-document.pdf</pdf>
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 <pdf>Media:Draft_Content_696481000-459_paper-1175-document.pdf</pdf>

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Ali et al 2022a - Revision history

Scipediacontent at 07:45, 20 July 2022

Scipediacontent: Scipediacontent moved page Draft Content 696481000 to Ali et al 2022a

Scipediacontent: Created page with " == Abstract == Validation and/or calibration of distinct element method (DEM) models is usually performed by comparing element test simulation results with the corresponding..."