한국농업기계학회:학술대회논문집 (Proceedings of the Korean Society for Agricultural Machinery Conference)
- 한국농업기계학회 2000년도 THE THIRD INTERNATIONAL CONFERENCE ON AGRICULTURAL MACHINERY ENGINEERING. V.II
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- Pages.117-123
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- 2000
APPLICATION OF DISTINCT ELEMENT METHOD TO SIMULATE MACHINE-SOIL INTERACTIONS
- Oida, A. (Graduate School of Agriculture, Kyoto University) ;
- Momozu, M. (Graduate School of Agriculture, Kyoto University) ;
- Ibuki, T. (Graduate School of Agriculture, Kyoto University) ;
- Nakashima, H. (Graduate School of Agriculture, Kyoto University)
- 발행 : 2000.11.01
초록
Using the modified DEM (Discrete Element Method), which we proposed in order to improve the accuracy of the simulation, soil behavior and reaction by lugs of rotating wheel and a soil cutting process by a high speed blade were calculated and compared with experimental data. The DEM is one of computational mechanics, where the object body is supposed as an assembly of small particles called elements and not a continuum as in the case of FEM. We can easily treat some discrete phenomena such as cracking, separating and sliding by the DEM. We had to modify the original mechanical model, which induced too free movement of elements, adding a tension spring, which would display the role of soil adhesion. The results of DEM simulations were successful from both the soil behavior and reaction points of view.