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.

• 윤태영(한국건설기술연구원 수석연구원) | Yun, Tae Young 교신저자
• 윤평준(한국건설기술연구원 연구위원) | Yoo, Pyeong Jun
• 김연복(한국건설기술연구원 선임연구위원) | Kim, Yeon Bok