Abstract：The cavitation performance of spade soil opener was investigated by discrete element method(DEM) to discuss the soil dynamic breaking process of spade soil opener. The twodimensional DEM analyzing models of soil opener and soil granules were built respectively. The working process of the soil opener was simulated based on the proposed twodimensional DEM analyzing models through a reasonable mechanical model. The simulation results show that with the increasing of working speed, the disturbance of soil increases obviously with worse backflow covering effect of soil. With the increase of soil moisture content, the soil reunion phenomenon becomes obvious with decreased soil liquidity.The simulation results are consistent with those of theoretical analysis.It is feasible to analyze the performance of spade soil opener by the proposed DEM.
纪玉杰, 于淼, 李成华. 铲式成穴器成穴性能的离散元法仿真[J]. 江苏大学学报（自然科学版）, 2014, 35(1): 40-43.
JI Yu-Jie, YU Miao, LI Cheng-Hua. Simulation analysis of cavitation performance for spade soil opener based on discrete element method[J]. Journal of Jiangsu University(Natural Science Eidtion)
, 2014, 35(1): 40-43.
2014, Vol. 35 
