Discrete Element Simulation Modeling Method and Parameters Calibration of Sugarcane Leaves

Objective The construction method of the discrete element model and setting simulation parameters in strip- blade-shaped sugarcane leaf are unclear. model’s accuracy greatly influences dynamic response characteristics between particles, it is necessary to improve through parameter calibration. Method optimized calibrated based on surface methodology (RSM) with physical angle repose as value. Firstly, basic leaves were measured by tests, was established multi-sphere polymerization XML method. effects filled different radii particles efficiency analyzed find optimal filling particle size model. Then, a Plackett-Burman test used select that significantly influence repose. Furthermore, value ranges three significant determined steepest ascent search test, second-order regression equation Box-Behnken combination obtained 21.15° target Finally, gas-solid coupling conducted trash content index compared field test. Result 2 mm. follows: static rolling friction coefficients 0.21 0.05, respectively, coefficient steel 0.30. There no difference content, maximum relative error them 8%, which further showed calibration reliable. Conclusions results modeling accurate reliable could be for subsequent research, well providing reference strip-and blade-shape materials.