Parameter Measurement and Calibration in Discrete Element Simulation of Broken Sweet Potato Seedlings

Given the lack of accurate parameter values in discrete element simulation sweet potato seedling mechanized recovery, a direct measurement and virtual calibration method was used to study Discrete Element Method (DEM) parameters broken stems leaves. The intrinsic parameters, collision recovery coefficient static friction seedlings were acquired by physical experiments. Different combinations designed for DEM simulation. leaves other unmeasurable determined stacking angle optimization Plackett-Burman test shows that coefficients stem-stem stem-steel rolling stem-leaf all significantly influence accumulation angle. sent steepest ascent Box-Behnken test. average 40.51° relative error 0.972% indicate it feasible calibrate calibrated can be