金针菇离散元参数标定与试验分析

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中图分类号：S224.9 文献标志码：A 文章编号：1008-0864（2026）01-0119-14

Discrete Element Parameter Calibration and Experimental Analysis of Flammulina Mushrooms

YE Dapeng 1，2 ， LIN Zhiqiang1，²， ZHAO Yiwei 1，2 ，QIU Hengrong1，2，LAI Hongkang1， XIE Limin 1，2* （1.CollegofchaicalandElectricalEnineing，FujnAgiultureandFrestryUivesityzhou50，ha; KeyLaboratoryfgricuturalIoatiosingcnologyujangcultureadFrestryUiversityzhou0a

Abstract：Inordertocombinetheshearforceaccuratelyandimprovetheaccuracyofsimulationeffectandactualoperation effct in thetoldesignofflammulina mushrooms cuting equipment，the discrete element simulation parametercalibration andanalysis was carredout withflammulina mushrooms intheharvest periodas theresearchobject.Thecontactparameters suchascollsionrecoverycoefficient，staticfrictionandrollingfrctioncoeffientbetween flammulinamushroomsandwhite steelweremeasuredbysetingupatestplatform.Basedonthediscreteelementsimulationmodel，through simulation accumulationangleandsimulationsheartest，tecollsionrecoverycoeffcient，staticfrictionandrollngfrictioncoffient， normalandtangentialcontactstifessandcricalnoralandtangentialstressbetweenflammulinamushroomsparticleswere takenas test factors，andthe acumulationangleand shear force were taken asevaluation indexes.The Box-Behnken response surface methodand the Central CompositeDesign center wereused for multi-objectiveoptimization simulation and calibration.TheresultsshowthatthecollsionrecoverycoeffcientwasO.13，thestaticfrictioncoeffcientwasO.198andthe rollingfrictioncoefficientwasO.O72.Thenormaland tangentialcontact stiffnesswere3.70x10and2.51×10N·m-1 ， respectively，and the critical normal and tangential stresses were both 9.0×106 Pa. The relative errors of pile angle and shear force in simulationand physical test were 0.75% and 1.64% ，respectively.Above resultscould provide reference forthe discrete element simulationanalysis betwee flammulina mushrooms and between flammulina mushroomsandagricultural tools，and the subsequent design of the root cutting mechanismofflammulina mushrooms.

Keywords：flammulina mushrooms；stacking angle test；shear test；discreteelements；parameter calibratiol

金针菇富含维生素、氨基酸、朴菇素等，有助于人体对营养物质的吸收，可增强人体对癌细胞的抵御能力，对人体健康有积极作用[1-5]。（剩余17656字）