Altair2008HyperWorksMorph-1-Altair2008HyperWorksMorphMorphOptimizationApplicationinCarPartStructuralDesign():HyperMeshMorphMorph:MorphFEMAbstract:Inthispaper,intermsofthefatigueproblemsofcarpartinthebenchtest,throughthestructuralshapeoptimizationmanagementintheeasilydamagedregionofcarpartwiththeMorphoptimizationtechnologyinHyperMesh,proposedseveraldifferentoptimizationprogrammesandsolvedfatiguedamageissueintheregion,theapplicationofMorphtechnologyhaseffectivelyimprovedtheefficiencyofthestructuraloptimizationofcarpart.Keywords:StructuraldesignCarPartMorphFEM12HyperMesh-2-Altair2008HyperWorks2.11GlobalSize:5mm336693316512.2STEELE=210GPaG=80GPaµ=0.3ρ=7.8e-9ton/mm3AluminumE=72GPaG=28GPaµ=0.3ρ=2.7e-9ton/mm3310KN2MSCNastran-3-Altair2008HyperWorks2Steering_rack_housingHyperMeshHyperMorphHyperMorph,Steering_rack_housingit01it02it033456HyperMorph3-4-Altair2008HyperWorks456-5-Altair2008HyperWorksbasebase+it01base+it02base+it03base+it01+it02base+it01+it03base+it02+it03base+it01+it02+it037base+it01+it02+it03738base978-6-Altair2008HyperWorks94base+it03region1σmax=372MParegio2σmax=248MPaHyperMorph-7-