基于熱力耦合模擬的帶阻尼臺葉片精鍛成形規(guī)律研究.pdf

1、西北工業(yè)大學碩士學位論文基于熱力耦合模擬的帶阻尼臺葉片精鍛成形規(guī)律研究姓名：顧亞萍申請學位級別：碩士專業(yè)：材料加工工程指導教師：劉郁麗20060301!，一一』些呈些耋曼塹墼耋堡壘壘，，，—，一一AbstractAbladewithadamperplatform，anewkindofbladesinaviationengine，isofwellvibrationresistanceandhighefficiencyTheshapeofi

2、tiscomplicatedandthematerialforitisdiffficulttodeform，SOtheprecisionforgingtawsareverycomplexBynowtherehas’tbeeneffectivewaytealizetheprecisionforgingofthebladewithadamperplatforminOUrcountryandresearchesaboutprecisionfo

3、rgingofthiskindofbladeareonexperimentalstageSoitisnecessarytostudythoroughlytheprecisionforginglawsoftheblade，andtOgrasptheinfluencelawsthattechnicalparametersactonprecisiontbrgingformingTherefore，the3Dcoupledthermomecha

4、nicalsimulationfortheprecisionforgingprocessofabladewithadamperplatformisproceeded，basedonthebulkformingsoftwareDEFORM3DintheprojectThisresearchhasgreattheoreticalsignificancesandpracticalvaluesforunderstandingflowinglaw

5、sofmaterialduringtheprecisionforgingprocessofthebladewithadamperplatformAbriefintroductiontotheprojectanditsmainresultsareasfollows：Accordingtothegeometrycharacterofthebladewithadamperplatform，itsprecisionforgingmodelsha

6、vebeenbuiltbasedonthreedifferentFEMmouldingmethodsAfteranalyzingthreemouldingresults，theprecisionforgingmodelsdescriptedbyFEMmeshhavebeenfinallyadoptedBasedonDEFORM3D，theimplementationmeanshasbeenstudied，bywhichcomplicat

7、edplasticformingprocessofthebladewithadamperplatformhasbeensimulatedandanalyzedThekeytechnicalproblemshavebeendisposedproperly，forexample：initialcontactboundary，frictionboundaryheatingtransferringboundary，iterationconver

8、gencecontrol，meshing，andchoiceofiterationsolverThesemakethe3Dcoupledthermo—mechanicalsimulationgoonwheelsTheprecisionforgingprocessofthebladewithadamperplatformhasbeensimulatedandanalyzed，theresultsofwholebillet’Sdeforme