電擊法消除殘余應力相關問題的研究.pdf

1、浙江大學機械工程學系碩士學位論文電擊法消除殘余應力相關問題的研究姓名：施彥彬申請學位級別：碩士專業(yè)：機械制造及其自動化指導教師：何聞20100315浙江大學碩士學位論文ABSTRACTThedissertation，whichwassponsoredbytheNaturalScienceFundofChina“ResearchonElectricShockMethodforResidualStressReliefandItsApplic

2、ation(No50675200)”，targetedseveralissuesinthetechniquesofresidualstressreliefbyelectricshockmethodInchapterone，theresearchbackgroundandsignificanceofthedissertationwaspresentedfirstThenthedomesticandforeignresearchstatus

3、wasintroduced，whichincludedeffectofelectricpulsecurrentonmicro—structureofmaterial，techniqueformeasuringresidualstressandthehighpowerelectricpulsetechnologyFinallytheresearchcontentandresearchmethodsinthedissertationwere

4、addressedInchaptertwo，theresistanceanddriveforthemobilityofdislocationwerepresented，andthemechanismofresidualstressreliefbyelectricshockmethodwasaddressedwhereresidualstresscouldbereducedbyreducingamountofdislocationwhen

5、thedrivewasgreaterthanresistance，Inchapterthree，theprincipleofblindholemethodformeasuringresidualstresswasfirstintroduced；then，basedontheprincipleforcalibratingthestrainreleasecoefficients，thestrainreleasecoefficientsbyf

6、initeelementanalysisWassimulativelycalibratedSOtheformulaeformodifyingthestrainreleasecoefficientsofplasticmaterialWasproposed，F(xiàn)inallythevaliditywasverifiedInchapterfourtheseveralpartsinthedeviceforgeneratingtheelectricp

7、ulsecurrentwaspresented，whichconsistedofequipmentforstoringelectricalenergyswitchesforelectropulsecurrent，electric—pulse—currentgeneratedcircuit，automaticswitch—controlledcircuitandmeasuringsystemforelectricpulsecurrentI

8、nchapterfive，theexperimentofresidualstressreliefbyelectricshockmethodWaspresentedwhichshowedthattheresidualstresswithintheworkpiecesdeclinedapparentlyaftertheelectricpulsecurrent’StreatmentItprovesthattheresidualstressre