Effect of soil particle-size distribution (PSD) on soil-subsoiler interactions in the discrete element model

Abstract

Aim of study: This work investigated the significance and mechanism for the effect of particle-size distribution (PSD) under different nominal radii using the discrete element method (DEM) and validated using the laboratory soil-bin results to accurately determine PSD. Area of study: Yangling, China Material and methods: The experimental soil was Lou soil. Soil disturbance characteristics (soil rupture distance ratio, height of accumulated soil, soil density change rate) and cutting forces (draft and vertical) under different treatments were predicted and measured respectively. Main results: The ANOVA outputs showed that PSD significantly affected draft and vertical forces (p

Keywords

• discrete element method (dem)
• soil disturbance characteristics
• soil cutting forces
• nominal radii
• calibration
• soil bin tests