轮式装载机后桥摆架疲劳强度分析及结构优化-豆柴文库

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轮式装载机后桥摆架疲劳强度分析及结构优化
Abstract
Thispaperpresentsananalysisandoptimizationofthefatiguestrengthoftherearaxleswingframeofawheeledloader.Theobjectiveofthisstudyistoimprovethereliabilityanddurabilityofthevehiclebyminimizingtheriskofcomponentfailureandincreasingitsservicelife.Thefatiguelimit,stressdistribution,anddeformationbehaviorwereanalyzedbyfiniteelementanalysis(FEA)usingANSYSworkbenchsoftware.TheresultsoftheFEAshowedthatthehigheststressconcentrationwasfoundattheweldsandboltedjoints,whichcorrespondedtothemostcriticalfailurelocations.Therefore,thedesignoftheswingframewasoptimizedbymodifyingthedimensionsandgeometryoftheweldsandreinforcingtheboltedjoints.Aftertheoptimizationprocess,thestressconcentrationwassignificantlyreduced,andthefatiguestrengthoftheswingframewassubstantiallyimproved.Theproposedmethodcanbeappliedtoenhancethefatiguestrengthofotherload-bearingcomponentsofthewheeledloadertoincreasetheirservicelifeandperformance.
Keywords:fatiguestrength,FEA,optimization,rearaxleswingframe,wheeledloader.
1.Introduction
Wheeledloadersarewidelyusedinconstruction,mining,andotherindustriesasanessentialmachineryandequipment,whichplayanimportantroleinimprovingefficiencyandproductivity.However,theirperformanceandreliabilityheavilyrelyonthestrengthanddurabilityofcriticalcomponentssuchastherearaxleswingframe.Theswingframeisresponsibleforbearingtheloadoftherearaxle,anditissubjecttovariousloadingconditions,suchasstaticanddynamicloads,impacts,andvibrations.Theseloadingconditionsoftencausefatiguestressontheswingframe,whichcaninducecracks,fractures,andotherdamagesovertime.Therefore,itisessentialtoensurethefatiguestrengthoftheswingframetoguaranteethesafetyandreliabilityofthewheeledloader.Thepurposeofthisstudyistoanalyzethefatiguestrengthoftherearaxleswingframeofawheeledloaderandoptimizeitsdesigntoimproveitsperformanceanddurability.
2.Methodology
2.1.FiniteElementAnalysis(FEA)
TheFEAwasusedtosimulatethestressdistribution,deformationbehavior,andfatiguelimitoftherearaxleswingframe.TheANSYS