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Numerical Modeling of Large Triaxial Compression Test with Rockfill Material Considering 3D Grain Size Distribution  

Noh, Tae Kil (서울시립대학교 토목공학과)
Jeon, Je Sung (인덕대학교 건설정보공학과)
Lee, Song (서울시립대학교 토목공학과)
Publication Information
Journal of the Korean GEO-environmental Society / v.13, no.10, 2012 , pp. 55-62 More about this Journal
Abstract
In this research, the algorithm for simulating specific grain size distribution(GSD) with large diameter granular material was developed using the distinct element analysis program $PFC^{3D}$(Particle Flow Code). This modeling approach can generate the initial distinct elements without clump logic or cluster logic and prevent distinct element from escaping through the confining walls during the process. Finally the proposed distinct element model is used to simulate large triaxial compression test of the rockfill material and we compared the simulation output with lab test results. Simulation results of Assembly showed very well agreement with the GSD of the test sample and numerical modeling of granular material would be possible for various stress conditions using this application through the calibration.
Keywords
$PFC^{3D}$; Distinct element method; Grain size distribution; Micro parameters; Numerical laboratory; Granular material; Large triaxial compression test;
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