汽车减速器外壳凸缘零件损伤因子与应力分析研究

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中图分类号：U463.218 文献标识码：A 文章编号：1003-8639（2025）06-0120-03

ResearchonDamage Factorsand StressAnalysisofFlangePartsofAutomobileReducer！

Liu Lili，Wang Jingjing （Shangqiu Instituteof Technology，School of Mechanical Engineering，Shangqiu 476ooo，China）

【Abstract】This article aims at the problem that the flange parts of theautomotive reducer housing are prone to failureundercomplexloads.Combinedwiththedamagefactortheoryand stressanalysismethod，thefiniteelement numerical simulation technologyisadoptedto conduct asystematic studyon its damage mechanism and stress distribution.Byestablishing thedamage factormodelandthe stressanalysis model，the stressconcentrationareasand damageaccumulation lawsof the parts under diferent working conditionsare simulated.Theresultsshow thattherootof theprotruding edgeisthekeydamage area，withthedamage factorreachingup to2.57，approachingthefatigue limitof the material.Undertheactionofforming load，thestresspeak at theconvex arcontheoutsideof theconnection joint reaches53oMPa，whichissignificantlyhigherthantheyield strengthof thematerial.Theresearchadopts high-strength materials to optimize the flange structure design andadjusts the geometric parameters to reduce stress concentration.The ffectiveessofnumericalsimulationtechnologyinpredictingthefailureriskofpartsandoptimizingdesignisverified， providing theoretical supportandengineering practiceguidanceforimprovingthereliabilityofautomotivetransmission systems.

【Key words】 flange parts；damage factor；stress analysis；numerical simulation

0 引言

汽车工业的迅猛发展使汽车零部件的技术要求日益提高，其中关键部件一减速器外壳的凸缘零件的可靠性问题和安全性问题是目前主要技术目标。（剩余3376字）