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http://dx.doi.org/10.7855/IJHE.2014.16.1.021

Determination of DEM Input Parameters for Dynamic Behavior Simulation of Aggregates  

Yun, Tae Young (한국건설기술연구원)
Yoo, Pyeong Jun (한국건설기술연구원)
Kim, Yeon Bok (한국건설기술연구원)
Publication Information
International Journal of Highway Engineering / v.16, no.1, 2014 , pp. 21-30 More about this Journal
Abstract
PURPOSES : Evaluation of input parameters determination procedure for dynamic analysis of aggregates in DEM. METHODS : In this research, the aggregate slump test and angularity test were performed as fundamental laboratory tests to determine input parameters of spherical particles in DEM. The heights spreads, weights of the simple tests were measured and used to calibrate rolling and static friction coefficients of particles. RESULTS : The DEM simulations with calibrated parameters showed good agreement with the laboratory test results for given dynamic condition. CONCLUSIONS : It is concluded that the employed calibration method can be applicable to determine rolling friction coefficient of DEM simulation for given dynamic conditions. However, further research is necessary to connect the result to the behavior of aggregate in packing and mixing process and to refine static friction coefficient.
Keywords
discrete element method; aggregate slump test; angularity test; equivalent sphere particle concept;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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