香蕉型振动筛的动态性能及疲劳分析-机械工程专业论文.docx

通过对香蕉型振动筛动态性能及疲劳寿命所做的相关分析，可以更好的指导生产实践，以便提高振动筛的使用寿命。关键词：振动筛，模态分析，谐响应，疲劳分析万方数据DynamicPerformanceandFatigueAnalysisofBanana—·shapedVibratoryScreenABSTRACTAsatypeofcommonlyusedscreeningequipment，vibratoryscreeniswidelyusedinminingandscreeningprocessofvariousresources．Dependingondifferentindustries，theneedofscreeningmethodcanbedifferentwhichdevelopingdifferenttrajectories ofscreeningmachinery．Asatypeoflinearvibratoryscreen，thebanana-shapedvibratoryscreenhaslowenergyconsumption，highefficiency,simplestructurecharacteristics．Vibratoryscreeniswidelyusedinmine，coal，smelting，buildingmaterialsandotherindustries．、Ⅳiththedevelopmentofeconomyandtheconstantrenewaloftechnology,thesurveysuponvibrationscreeningmachineryhavedrawnmoreandmoreattentions．Theemphasisplacenotonlyonfinerdivision，stricterspecification，butalsoonhigherstandardsofperformanceandfatiguelife．Duetothelong—termactionoferosionfrommaterialanddynamiccycleloads，componentsareeasytoproducefatigueproblem．Forthelessresearchonfatigueresearchofvibratoryscreen，thesubjecthasafar—reaching significance．SchenckSL02461 banana-shapedlinearvibratoryscreenistheobjectto bediscussed．Themainstructureandworkingprincipleofvibratoryscreenare introduced．Therelevantdimensionsofvibratoryscreenareobtainedbydrawing．Thecomponentsofvibratoryscreenarethree—dimensionalmodeledbySolidWorks．Three-dimensionalmodelofvibratoryscreenisachievedbyassemblybetweencomponentsonthepremisethattherehasnointerference．Thethree—dimensionalmodelofvibratoryscreeniscorresponding simplifiedforbalancingtheefficiencyandmakingtheresultsmorecorrectintheprocessoffiniteelementanalysis．Thefiniteelementanalysismodelwillbeobtainedafterthematerialproperties，theconstraintsdefiniteandmeshingdone．ThenaturalfrequenciesandshapesareobtainedbymodalanalysisofvibratoryscreencombiningwithANSYSsoftware．Therationalityofstructurecanbeprovedbyits avoidingresonance．Afterharmonicresponse analysis，the111万方数据displacementresponseatdifferentfrequencies，stressresponseunderworkingfrequencyandstressresults