薏苡种子物性参数测定与离散元仿真参数标定

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中图分类号：TQ327 文献标识码：A 文章编号：2095-2953（2025）03-0031-08

Determination of Physical Property Parameters of Coix Seeds and Calibration of Discrete Element Simulation Parameters

ZHENG Gao-yin， FENG Li * ， CAO meng， HU Feng （CollegeofMechanicalandElectricalEngineering，NortheastForestryUniversity，HarbinHeilongjiang5O6Cin

Abstract：The intrinsic parameters of Coix seeds，thecontact parameters between Coix seeds，and between Coix seds and ABS plates were measured by physical experiments.The physical measured values were used as the parameters to select the reference values，the Placket-Burman test was used to screen the significance simulation parameters，the steepest climb test was used to determine the optimal valuerange of the three significance parameters，and the second-order regression model of three sets of significance parametersand the angleof repose was obtained according to the Box-Behnken test，and the physical measured value of the angle of repose was 30.76∘ as the optimization goal.The optimal combination of parameters was as follws：the static friction coefficient ofCoix-Coix was 0.44， the static frictioncoefficient of Coix-ABS was O.26，and the rolling friction coefficient of Coix-Coix was 0.09. Key words：Coix seed； discrete element method; Angle of rest； parameter calibration

薏苡俗称薏仁米，是一种药食同源的小杂粮[-2]，具有很高的食用以及药用价值。（剩余8163字）