引用本文格式王月华,贺俊林,杨虎虎,等.蚕豆种子离散元模型仿真参数标定[J].农业工程,2023,13(1):79-84.DOI:10.19998/j.cnki.2095-1795.2023.01.015.WANGYuehua,HEJunlin,YANGHuhu,etal.Simulationparametercalibrationofbroadbeanseeddiscreteelementmodel[J].AgriculturalEngineering,2023,13(1):79-84.蚕豆种子离散元模型仿真参数标定王月华,贺俊林,杨虎虎,郭彦汐,卢家宣(山西农业大学农业工程学院,山西晋中030801)摘要:为确定蚕豆种子离散元模型仿真参数,采用基本球单元组合方法建立蚕豆种子离散元模型。通过物理试验测定蚕豆种子与钢板间接触参数,在EDEM软件中对蚕豆种子离散元仿真参数进行标定,得到蚕豆种子与钢板间碰撞恢复系数为0.46、静摩擦系数为0.437和滚动摩擦系数为0.053。以种间接触参数为因素,以实测堆积角与仿真堆积角相对误差为指标,进行最陡爬坡试验、3因素二次正交旋转组合设计试验,得到蚕豆种间碰撞恢复系数为0.25、静摩擦系数为0.53和滚动摩擦系数为0.083。利用最佳参数组合进行仿真试验,蚕豆种子堆积角实测值与仿真值的相对误差为1.1%。结果表明,标定的仿真接触参数可用于蚕豆种子颗粒的离散元仿真。关键词:蚕豆种子;离散元模型;仿真参数标定;堆积角中图分类号:S225文献标识码:A文章编号:2095-1795(2023)01-0079-06DOI:10.19998/j.cnki.2095-1795.2023.01.015SimulationParameterCalibrationofBroadBeanSeedDiscreteElementModelWANGYuehua,HEJunlin,YANGHuhu,GUOYanxi,LUJiaxuan(CollegeofAgriculturalEngineering,ShanxiAgriculturalUniversity,JinzhongShanxi030801,China)Abstract:Inordertodeterminesimulationparametersofdiscreteelementmodelofbroadbeanseeds,discreteelementmodelofbroadbeanseedswasestablishedbyusingbasicballelementcombinationmethod.Contactparametersbetweenbroadbeanseedsandsteelplateweremeasuredbyphysicaltest.DiscreteelementsimulationparametersofbroadbeanseedswerecalibratedinEDEMsoftware.Collisionrecoverycoefficientbetweenbroadbeanseedsandsteelplatewas0.46,staticfrictioncoefficientwas0.437,androllingfrictioncoefficientwas0.053.Takinginterspeciescontactparametersasfactors,relativeerrorbetweenmeasuredaccumulationangleandsimulatedaccumulationangleasindex,steepestclimbingtestandt...