基于EDEM和3D打印成型的外槽轮排肥器排肥性能研究

《基于EDEM和3D打印成型的外槽轮排肥器排肥性能研究》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。

1、基于EDEM和3D打印成型的外槽轮排肥器排肥性能研究杨洲朱卿创孙健峰陈兆春张卓伟华南农业大学工程学院摘要:外槽轮排肥器是使用最广泛的排肥器2—，R前外槽轮排肥器结构和几何尺寸单一，无法适用不同肥料颗粒排肥需求，直接影响了排肥效果。EDEM为目前对于颗粒类仿真最有效的方法之一。采用测量和统计学方法获得肥料颗粒的三轴尺寸，以近似球体假设肥料颗粒形状，建立肥料颗粒和外槽轮排肥器的EDEM模型,通过改变槽轮的结构尺寸等，对其排肥过程进行仿真，分析外槽轮排肥器的排肥特性;3D打印成型设计槽轮，通过台架试验验证仿真结果的准确性。结果表明:

2、凹槽半径、槽轮转速对施肥量影响较大，满足线性正相关，螺旋升角对施肥量影响不显著(P>0.05),仿真结果与试验结果的相对误差为0.85%l5.98%,平均相对误差为7.21%。木文所建立的EDEM仿真模型准确，具有实际工程应用价值。关键词：外槽轮;排肥器;EDEM;3D打印;作者简介：杨洲(1972-)，男，山西襄汾人，教授，博士生导师，(E-mail)yangzhou@scau.edu.cn。作者简介：孙健峰(1983-),男，长春人，副教授，硕士生导师，(E-ma11)sunjianfeng@scau.edu.cn。收稿日

3、期:2017-02-28基金：国家自然科学基金项目(51505157)StudyonthePerformanceofFlutedRollerFertilizerDistributorBasedonEDEMand3DPrintingYangZhouZhuQingchuangSunJianfengChenZhaochunZhangZhuoweiCollegeofEngineering,SouthChinaAgriculturalUniversity;Abstract：Theflutedrollerisoneofthemostwid

4、elyusedfortilizerdistributor.Nowadays,theflutedrollerstructureandgeometriedimensionaresingle,whichcannotmeettheneedsofdifferentfertilizerparticlesandadirectimpactontheuniformityoffertilizer.EDEMisoneofthemosteffectivemethodsforparticlesimulation.Tnthispaper,thethree

5、-axissizeofthefort订izerparticleswasobtaincdbymcansofmcasurcmentandstatisticalmethods,theEDEMmodelofthefertilizerparticlesbythenon-sphericalassumptionandtheflutedrollerwereestablished.Bychangingthestructuralsizeoftheflutedroller,theprocessoffertilizerremovalwassimula

6、tedandthefertili^ercharacteristicsoftheflutedrollerwereanalyzed.Moreover,thedesignofflutedrollerwasmanufacturedby3Dprintingtechnologytoverifythecorrectnessofthesimulationresultsthroughthebenchtest・Theresultsshowedthattheinflueneeoftheradiusofthegrooveandthespeedoffe

7、rtilizerwheelontheamountofferti1i7erwaslarge,andthelinearpositivecorrelationwassatisfied.Theeffectofthespiralangleontheamountoffertilizerwasnotsignificant(P>0.05)•TherelativeerrorbetweentheSimulationresultsandtheexperimentalresuItswas0.85%-15.98%andtheaveragerelativ

8、eerrorwas7.21%.TheEDEMsimulationmodelestablishedinthispaperisaccurateandhaspracticalengineeringapplicationvalue.Keyword：flutedroller;ferti