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基于Optistruct的汽车制动盘防尘罩形貌优化.docx

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基于Optistruct的汽车制动盘防尘罩形貌优化 Title:ShapeOptimizationofAutomotiveBrakeDustCoverbasedonOptistruct Abstract: ThepurposeofthispaperistopresentashapeoptimizationmethodologyforautomotivebrakedustcoversusingOptistruct.Thebrakedustcoverplaysacrucialroleinpreventingtheaccumulationofbrakedustonthebrakedisc,whichcanaffectthebrakingperformanceandleadtoexcessivewearonbrakepadsandothercomponents.Theshapeoptimizationapproachaimstoimprovetheaerodynamicperformanceofthedustcover,ensuringefficientdustremovalandenhancingoverallbrakingperformance.Thepaperoutlinestheoptimizationprocess,discussestheobjectivefunction,constraints,anddesignvariables,andpresentstheresultsoftheoptimizationprocess. 1.Introduction Thebrakesystemisanessentialsafetyfeatureinautomotivevehicles,andthebrakedustcoverservesasaprotectivebarrieragainstdust,debris,andcontaminantsenteringthebrakemechanism.However,conventionalbrakedustcoversoftenhavesuboptimaldesigns,resultingintheaccumulationofdustonthebrakediscsurface.Thisnegativelyimpactsbrakingefficiency,reducesthelifespanofbrakecomponents,andincreasesmaintenancerequirements.Therefore,thereisanincreasingdemandforoptimizedbrakedustcoverdesignstoenhanceoverallbrakingperformance. 2.Methodology Thissectionprovidesanoverviewofthemethodologyusedfortheshapeoptimizationofthebrakedustcover.Itincludesthefollowingsteps: -Generationoftheinitialdesignusinggeometricparametrizationtechniques -ComputationalFluidDynamics(CFD)analysisforevaluatingtheaerodynamicperformanceofthedustcover -OptimizationsetupusingOptistruct -Objectivefunctiondefinition -Constraintsidentification -Designvariablesselection 3.ObjectiveFunction Theobjectivefunctionisakeycomponentoftheshapeoptimizationprocess.Inthisstudy,theobjectivefunctionisdefinedastheminimizationofthedragcoefficientofthedustcover.Thedragcoefficientisameasureoftheresistanceexperiencedbythedustcoverasitmovesthroughtheair.Byreducingthedragcoefficient,thedustcovercanenhancetheoverallaerodynamicperformanceofthebrakesystem,leadingtoimproveddustremovala