Authors

Abstract

In this study, the parameters of tiger nut were calibrated based on discrete element method, and significant influencing factors and optimal levels were selected by Plackett-Burman test, steepest climb test and center compound test, and verified by electromagnetic vibration hopper bench test. The results show that the relative error between the simulated resting angle and the actual resting angle is only 0.381%. The fitting degree of the model is 96.32% and 94.57% respectively, which can provide theoretical basis for the study of the parameters and discrete element simulation of tiger nut.

Abstract in Chinese

本研究基于离散元法对油莎豆参数进行标定，采用Plackett-Burman试验、最陡爬坡试验和中心复合试验筛选出显著影响因素及最优水平，进行电磁振动料斗台架试验进行验证。结果表明：仿真休止角与实际休止角相对误差仅为0.381%；电磁振动料斗输送时间的预测模型拟合度为96.32%，质量流率拟合度为94.57%，可为油莎豆参数特性研究以及离散元仿真工作提供理论依据