工藝參數(shù)對球底圓筒形拉深件成形極限影響研究.pdf

1、重慶大學碩士學位論文工藝參數(shù)對球底圓筒形拉深件成形極限影響研究姓名：陳康申請學位級別：碩士專業(yè)：材料加工工程指導教師：周杰20090525英文摘要一————————————————————————————————————————————————————————一ABSTRACTMetalprocessingtechnologyisthemostCOITUTIOntypeofmanufacturingWiththefastdevelopm

2、entofthesheetmetalstampingtechnologyandthecontinuouslyexpansioninthescopeofapplication，drawingprocessandbulgingprocess，basedontheirrespectiveparticularcharacteristics，playadecisiveroleinthepunchingproductionIntherealprod

3、uction，theformingofmanyaccessoriesisincompletedrawingorbulging，butmanifestsasdrawingandbulgingformingpropertyInaddition，fornowthereisashortageofcomparativelyfurtherstudyintheaspectofdrawingandbulgingformingAccordingtothi

4、sproblem，onthebasisofusingalargeamountoftechnicaldataforreference，takingthesphericalbottomedcylindricalcupasresearchobject，combinedwiththeanalysisofthetheoretical，numericalsimulation，physicalexperiment，thisarticleanalyse

5、stheeffectruleofblankholderforce，lubrication，deformationrate，materialthicknessandcavingdiecirculararcupondrawingandbulgingforminglimitAconcreteanalysisismadeasfollows：1AccordingtotheSphericalbottomedCylindricalParts，hemi

6、sphericbulgingpartsandcylindricalcuppartsfeatures，duringthedrawingprocessing，thestress—strainstateforthesemispherepartandthecylindershapewithflangerhasbeenanalyzedintheory2Thesimulationforthedrawingandformingofsphericalb

7、ottomedcylindricalcupisconductedbyusingLSDYNAFORMTheinfluencelawofblankholderforce，lub訂cationdeformationrate，materialthickness，cavitydiecirculararcsemesteranddifferentmaterialsuponforminglimithasbeenanalyzed3Selectingthe

8、cornnlonplateStl4andstainlesssteelplate0Cr18Ni9，bymeansofphysicalexperiment，theinfluenceoftheblankholderforce，lubrication，cavitydiecirculararcsemesteranddifferentmaterialsuponthesphericalbottomedcylindricalcuphasbeenanal

9、yzed4Basedonthemethodsoftheoreticalanalysis，numericalsimulationandnumericalfitting，inaccordancewiththelawsoftheforminglimit，integratedtoimprovethesphericalbottomedcylindricapiecesforminglimitprogramexpansiontopunthespher