Soil Particle Modeling and Parameter Calibration Based on Discrete Element Method

In order to establish a Discrete Element Method (DEM) model of soil particles, the in laboratory bin was used as research object. The texture determined be sandy loam by sieving, and shape particles analyzed an image particle analyzer geometric particles. Edinburgh Elasto-Plastic Adhesion (EEPA) chosen contact for simulation analysis, accuracy selection tests. parameters played crucial role results simulation. Test methods were obtain that easy measure. For could not measured model, direct shear test calibration test, after screening sensitive using PB response surface method calibrate parameters. verified comparing under different loadings.