Analysis of Dynamic Phenomenon in Rotary Tilling (Part 3)

—Prediction and Evaluation for Leveling Performance in Rotary Tillers—

Abstract

The rotary tillage model, which can predict the phenomenon of soil throw and required power in rotary tilling, was constructed around the discrete element method (DEM) in the previous paper (Hirasawa et al., 2014). In the current paper, pile shapes of soil tilled by two types of rotary tillers were estimated using this model. The comparison between the simulated and the experimental results indicated that this model was able to predict the pile shape of tilled soil. Additionally, this model was able to estimate the influence of mechanical specifications (rotary tiller width, rotary tiller blades arrangement and blade shape) on the root-mean-square (RMS) value of pile height distribution after tillage. The determination coefficient of the RMS value was 0.799.