IMPACT OF VIBRATION ON TILLAGE PERFORMANCE OF SUBSOILERS USING THE DISCRETE ELEMENT METHOD (DEM)

Plow pan is one of the main obstacles to high production agricultural plants in Chongqing, China. As a minimal tilling method, subsoiling can break plow and help growth plants. There are two methods: vibrating (VS) traditional (TS). A soil model with upland field features Chongqing was established for DEM-based simulation. The simulation validated by experiments, items looseness, coefficient disturbance, cross-section tillage, errors simulated experimental values looseness disturbance TS VS were 12.9% 14.7%, respectively. Compared TS, resulted lower higher smaller width upper furrow, lighter damage tillage layer, no obvious overturn blocks observed VS. vibration helps improve performance subsoilers.