基于虛擬樣機技術(shù)的錘片式粉碎機轉(zhuǎn)子動力學(xué)特性研究.pdf

1、華中農(nóng)業(yè)大學(xué)碩士學(xué)位論文基于虛擬樣機技術(shù)的錘片式粉碎機轉(zhuǎn)子動力學(xué)特性研究姓名：杜小強申請學(xué)位級別：碩士專業(yè)：農(nóng)業(yè)機械化工程指導(dǎo)教師：宗力20040501ABSTRACTFlat—hammermillisoneofthecoreequipmentsinfeedprocessingindustryForitssimplenessinstructure，highnessinproductivity，andsLtrenessinoperatio

2、n，fiathammermilliswidelyusedinforageproductionHowever，duringrunningitmanyproblemssuchasvibration，noiseandblockalsoarise，whicharemainlyresultedfromitsowncharacteristics，runningenvironmentandprecisionofassemblageToavoidthe

3、sedeficienciesandimproveitsperformance，itiseffectivetOimprovethedesignandoptimizethestructureofthemillAsanewtechnologyofproductdesignVirtualPrototypin烈VP)isarevolutionarymethodtOtraditionalresearchBysimulationtests，engin

4、eerCannotonlydiscoverthepotentialproblemsofdesignandmodifyitintime，butalsodecreasethedependenceonphysicalmodelConsideringtheexistentproblemsandpracticalmanufacturerequirements，thedynamiccharacteristicsofflat—hammermill’S

5、rotorisinnovativelystudiedbasedonthevirtualprototypesimulationTheresultCanbeusedasthereferencetooptimizingthemill’SstructureanddiagnosingthefaultsThefollowingpartsarestudiedinthispaperThebasicsysteminfoofVPtechnologyisin

6、troducedfirst，andtheinlandandoversearesearchactualityanddevelopmenttrendinthisaspectisreviewedItispointedoutthattheapplicationofVPtodesigningtheflat—hammermillshouldbelistedontheagendaTheintegrativeparametermethodandtran

7、sferma廿ixmethodareusedtodevelopthediscretemodelofflat—hammermill’SrotorinthelightofitscharacteristicsThecriticalspeedsandmodesofrotorwithsymmetryhammersaletheoreticallydeducedThesubcriticalworkingconditionofitisjudgedThe

8、virtualprototypeofflathammermill’SrotorissetupbyusingadvisablesimplicityandinkiaiizationintheplatformwhichconsistsofMDTathree‘dimensionmodelingsoftware，vN4D，asoftwareofkinematicanddynamicanalysis，andMATLAB，asoftwareofsig

9、naldisposalBysimulatingtheperformanceoffiathammermill’Srotorwithvarioustypesofhammers，arrayandabrasionwhicharebasedontheestablishedvirtualprototype，theapparentinfluenceofhammersupontherotor’SperformanceissuggestedKeyword