In order to explore the drag reduction mechanism of pneumatic subsoiling and study influence on soil, this used machine learning models predict working resistance a subsoiler adopted random forest (RF), error back-propagation (BP), eXtreme gradient boosting (XGBoost) support vector regression (SVR) analyze compare predictions these four models. Field experiments were carried out in two fields w...

As a promising and convenient numerical calculation approach, the discrete element method (DEM) has been increasingly adopted in research of agricultural machinery. DEM is capable monitoring recording dynamic mechanical behavior materials operational process machinery, from both macro-perspective micro-perspective; which tremendous help for design optimization machines their components. This pa...

Sandy clay loam has the characteristics of both sand and clay. Because these characteristics, frictional resistance adhesive occur between soil tillage tool. The combined effect two forces increases external friction angle tool, thus increasing working resistance. To address this issue, study investigated coupling high pressure hot air on by using a self-developed device to measure angle. Test ...

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 di...