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The Influence of Representative Volu...

Kaufman, Yevgeniy.

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The Influence of Representative Volume Element Size, Soil Fabric, and Interparticle Elasto-Plasticity in Three-dimensional Ellipsoidal Discrete Element Modeling of Granular Assemblies.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	The Influence of Representative Volume Element Size, Soil Fabric, and Interparticle Elasto-Plasticity in Three-dimensional Ellipsoidal Discrete Element Modeling of Granular Assemblies./
作者:	Kaufman, Yevgeniy.
面頁冊數:	86 p.
附註:	Source: Masters Abstracts International, Volume: 51-03.
Contained By:	Masters Abstracts International51-03(E).
標題:	Geotechnology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1519567
ISBN:	9781267652843

The Influence of Representative Volume Element Size, Soil Fabric, and Interparticle Elasto-Plasticity in Three-dimensional Ellipsoidal Discrete Element Modeling of Granular Assemblies.
Kaufman, Yevgeniy.

The Influence of Representative Volume Element Size, Soil Fabric, and Interparticle Elasto-Plasticity in Three-dimensional Ellipsoidal Discrete Element Modeling of Granular Assemblies. - 86 p.

Source: Masters Abstracts International, Volume: 51-03.

Thesis (M.E.)--University of Colorado at Boulder, 2012.

In this comparative study of RVEs, a DEM code ELLIP3D is utilized to simulate quartz sand in triaxial compression tests with particle assemblies attained from an in situ fabric generated by synchrotron X-ray microcomputed tomography. In order to attain meaningful results for engineered systems at the macroscopic scale using DEM, RVE volume sizes play a significant role in the accuracy of simulating physical experiments. Simulation time or the number of particles limits the capacity of DEM to simulate large-scale granular systems, which is why it is crucial to determine an efficient quantity and quality of RVEs.

ISBN: 9781267652843Subjects--Topical Terms:

1018558
Geotechnology.

The Influence of Representative Volume Element Size, Soil Fabric, and Interparticle Elasto-Plasticity in Three-dimensional Ellipsoidal Discrete Element Modeling of Granular Assemblies.
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245 1 4 $a The Influence of Representative Volume Element Size, Soil Fabric, and Interparticle Elasto-Plasticity in Three-dimensional Ellipsoidal Discrete Element Modeling of Granular Assemblies.
300 $a 86 p.
500 $a Source: Masters Abstracts International, Volume: 51-03.
500 $a Adviser: Richard A. Regueiro.
502 $a Thesis (M.E.)--University of Colorado at Boulder, 2012.
520 $a In this comparative study of RVEs, a DEM code ELLIP3D is utilized to simulate quartz sand in triaxial compression tests with particle assemblies attained from an in situ fabric generated by synchrotron X-ray microcomputed tomography. In order to attain meaningful results for engineered systems at the macroscopic scale using DEM, RVE volume sizes play a significant role in the accuracy of simulating physical experiments. Simulation time or the number of particles limits the capacity of DEM to simulate large-scale granular systems, which is why it is crucial to determine an efficient quantity and quality of RVEs.
520 $a ELLIP3D simulations have been carried out to evaluate a minimum threshold for RVE size for which a comparison of results from various sized boxed particle assemblies provides valuable information on the quantitative behavior of RVEs. The mid-progress and final results of the ELLIP3D simulations are compared to experimental data from synchrotron micro-computed tomography (SMT) scans. These data containing the initial numerical packing from the scans provide us with the particles' radii, positions, and orientations which are approximated as ellipsoids, which is a current limitation of ELLIP3D, but extension to poly-ellipsoids is being planned. Additionally, a comparison between simulations of triaxial compression on in situ fabric versus a slightly displaced fabric due to gravity deposition on an assembly of ellipsoidal particles is explored.
520 $a Furthermore, a bilinear elasto-plasticity constitutive model is implemented into ELLIP3D to explore a more realistic phenomenon within the interparticle interaction for materials that exhibit such behavior. Elasto-plastic deformation is appropriate in studies involving metallic powders. The results of a two-particle compaction simulation using DE modeling are compared to finite element (FE) simulations.
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650 4 $a Applied Mechanics. $3 1018410
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