油茶果物料特性及脱壳过程仿真接触参数研究

打开文本图片集

中图分类号：S565.9 文献标识码：A 文章编号：2095-5553（2025）07-0233-08

Abstract：Inorder toshortentheresearchanddevelopmentcycleofseasonal product procesing equipment forCamelia oleifera fruit，thediscreteelement modelofcameliaoleiferafruit wasestablishedandthecontact parameters werecalibrated bytakingcamellaoleifera fruitastheresearchobject.The density，watercontent，Poisson’sratioandelasticmodulus of camellia oleifera fruit were 973.56kg/m3 ， 69% ，0.28and 156MPa ，respectively， measured by drainage method，drying methodanduniaxialcompressiontest.Thecontact parameters werecalibrated bycomparing theresultsof physical testand simulationtest.Thecollsionrecoverycoeficient，staticfrictionfactorandrolling friction factorofcamelia oleifera fruitand steelwererespectivelycalibratedbycolisionbounce test，slopesliptestandsloperoling test withthe values of 0.576，O.540 and O.007 7，respectively.The actual stacking angle of 21.21∘ wasobtained through cylinder lifting testand digital image procesing.Inthesimulation test，thecontactparameters betweencameliaoleifera fruit weretakenas thetestfactors，thesimulationstackingangleastheindex，the steepest climb test wasusedtofindtheoptimal intervalof the significantfactors，andtheregression modelof simulation stacking angleand significant parameters wasestablished in theresponse surfacetest.Theoptimalparametercombinationofcamellaoleiferafruitcontact wasobtainedafter optimizationasfollows：CollsinrecoverycoefficientO.467，static frictioncoefficentO.534，rolling frictincoefient 0.0080．The optimal parameter combination was used for verification，and the simulation test pile angle was 21.03∘ Theresults showed thattherelativeerror between the simulatedpileangleandtheactual pileangleaftercalibration was 0.85% ，and the pile shape wasconsistent.Thecalibrationresultswere reliable，andcould provide theoretical reference for the research and development and simulation optimization of camella oleifera fruit processing equipment. Keywords：cameliaoleifera fruit；hull；contact parametercalibration；material characteristics；response surface experiment

0 引言

油茶（Camellia）是一种木本油料树种。（剩余13143字）