Authors

Abstract

This study aims to accurately calibrate the interaction between cotton stalks and rubber belts in agricultural machinery using the Discrete Element Method (DEM). Through physical experiments, key parameters such as the collision recovery coefficient, static friction, and rolling friction were measured and validated through simulations in EDEM. Optimal values were identified as 0.446, 1.146, and 0.0194, respectively. Full-factorial analysis revealed significant effects on repose angle. Repeated trials confirmed a deviation of only 0.72% from experimental results, validating the calibration method. These findings provide a foundation for improving cotton stalk harvesting and transportation efficiency.

Abstract in Chinese

本研究旨在通过离散元法(DEM)准确标定棉秆与橡胶带在农业机械中的相互作用。通过物理实验，测得关键参数如碰撞恢复系数、静摩擦系数和滚动摩擦系数，并在EDEM中进行仿真验证，最佳值分别为0.446、1.146和0.0194。全因子分析显示这些参数对堆积角的影响显著。重复实验结果与实际实验值偏差仅为0.72%，验证了标定方法的准确性。本研究为优化棉秆收获和运输效率提供了理论基础。