Authors

Abstract

This study is based on the discrete element method to calibrate the physical parameters of astragalus membranaceus. Plackett Burman test, steepest climb test, and Box Behnken test were used to screen for significant influencing factors and optimal levels, and a quadratic regression model was obtained for the relative error between the simulated and physical experiment resting angles. The results showed that the relative error between the simulated and physical test angles of repose was only 0.392%, which can provide a theoretical basis for the discrete element simulation test of the working process of the astragalus membranaceus picking machine.

Abstract in Chinese

本研究基于离散元法对黄芪物性参数进行标定，采用Plackett-Burman试验，最陡爬坡试验，Box-Behnken试验筛选出显著影响因素及最优水平，得到仿真试验休止角与物理试验休止角相对误差的二次回归模型。结果表明：仿真试验休止角与物理试验休止角相对误差仅为0.392%，可为黄芪捡拾机工作过程的离散元仿真试验提供理论依据。