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1、AbstractDuetotime-consuming,lowaccuracyofpreviousdrillingprocessanalysisandsingletargetinoptimizingdrillingprocessingparameters,forthepurposeofdrillingprocessanalysisandprocessingparametersoptimization,anewstrategywasputforwardinthisdissertation,which
2、combinecomputersimulationtechnologywithintelligentoptimizationtechnology.Inordertooptimizetheprocessingparametersofdrilling,thisdissertationestablishesthefiniteelementsimulationmodelofdrillingprocessandanalyzestheinfluentialfactorsofthedrillingprocess
3、,thenestablishtheresponserelationbetweentheinfluencefactorsanddrillingforce,intheend，optimizethedrillingprocessparametersbyusingmulti-objectiveintelligentoptimizationalgorithm.Thedetailedresearchcontentofthisdissertationwasdividedintothefollowingsever
4、alaspects:1.Thefiniteelementanalysisofdrillingprocess.Basedonthedrillingtheory,thefiniteelementtheory,materialconstitutiverelationtheoryandlargedeformationtheory,the3-DfiniteelementsimulationmodelofdrillingprocessisestablishedbysoftwareDeform3D.Andthe
5、n,havingaresearchonfiniteelementmodelinginvolvedadaptivemesh,materialsmodel,separationcriterionandfrictionmodel,andsoon.Throughfiniteelementsimulationofdrillingprocess,analyzedthedrillingprocessofstressfieldandtemperaturefield.Thisdissertationemphatic
6、allyanalyzestheeffectofbitdiameter,cuttingspeed,andfeedondrillingforce,andputupadrillingforcetestplatformformachiningexperiment.Finally,testresults,theempiricalformularesultsanddrillingforcesimulationresultswerecomparedandverifytheeffectivenessofsimul
7、ationresults.2.Regressionmodelestablishmentofdrillingforce.Aimingatthemodelofcollectingdatainfieldprocessing,thisdissertationadaptthefiniteelementmethod,takedrilldiameter,cuttingspeedanddrillingfeedofmaineffectondrillingforceasexperimentfactor,usetest
8、schemeofcentralcompositetoestablishdrillingsimulationexperimentprojecttoobtainthedrillingforceresults.Finally，bymeansoftheresponsesurfacemethod，secondnonlinearregressionofdrillingtestresultsisanalyzed,andthedrillingaxialforceandtorqueoftheregr
