Prediction of draft forces in cohesionless soil with the Discrete Element Method

摘要: The Discrete Element Method (DEM) is applied to predict draft forces of a simple implement in cohesionless granular material. Results are compared with small-scale laboratory tests which the horizontal force measured at straight blade. This study focused on case material under quasi-static conditions. DEM requires calibration local contact parameters between particles adjust bulk properties. most important property angle internal friction /. In DEM, shear resistance limited spherical due excessive particle rotations. cured by retaining rotations particles. Although this known prevent from developing bands, model still turns out be capable predicting reaction contrast empirical formulas for kind application, can easily extended more complex tool geometries and trajectories. helps find numerically efficient setup numerical model, correctly so allowing large-scale industrial simulations. 2011 ISTVS. Published Elsevier Ltd. All rights reserved.