Simulation of a soil loosening process by means of the modified distinct element method

被引:46
作者
Momozu, M [1 ]
Oida, A
Yamazaki, M
Koolen, AJ
机构
[1] Kyoto Univ, Grad Sch Agr, Lab Agr Syst Engn, Div Environm Sci & Technol, Kyoto 6068502, Japan
[2] Kinki Univ, Sch Biol Oriented Sci & Technol, Wakayama 6496493, Japan
[3] Univ Wageningen & Res Ctr, Dept Agr Engn & Phys, AGRPTECHNION, NL-6703 BC Wageningen, Netherlands
关键词
distinct element method (DEM); adhesion; contact force; pendulum-type cutting tool;
D O I
10.1016/S0022-4898(03)00011-9
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
We apply the Distinct Element Method (DEM) to analyze the dynamic behavior of soil. However, the conventional DEM model for calculation of contact forces between elements has some problems; for example, the movement of elements is too discrete to simulate real soil particle movement. Therefore, we modify the model to solve the difficulties. To investigate the validity of the modified model, we conduct an experiment in which soil is cut with a pendulum-typeblade, and simulate the soil loosening process with the modified DEM model. This paper presents details of the experimental apparatus and the comparison of soil behavior and energy absorption between the simulation and the experiment. Some characteristic phenomena of the experiment are reproduced in the simulation giving us confidence that the modified model is better than the conventional model for the simulation of soil behavior. (C) 2003 ISTVS. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:207 / 220
页数:14
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