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1、大連理工大學(xué)碩士學(xué)位論文波面?zhèn)鳠岚宓膽?yīng)力分析與測試姓名:許曉飛申請學(xué)位級別:碩士專業(yè):化工過程機(jī)械指導(dǎo)教師:史啟才劉志軍20070601波面?zhèn)鳠岚獾膽?yīng)力分析與測試StressAnalysisandMeasureoftheWavyHeatTransferPlateAbstractThewavyplateheatexchangerisanewtypeheattransferdeviceIthasbeenappliedinsomanyindu
2、strialsectorsTheexistingresearchweremainlyconcentratedonheattransferandflowcharacteristics,butlittlemechanicsbehaviorsuchasstrengthandstresswereinvestigatedintheprocessofmanufacturingandrunningWithANSYSsoftwareandfinitee
3、lementmethod,amodelofwavyplateispresentedinthispaperTheelementselection,griddingthefiniteelementmodelofspotweld,loadingandresolutionarealsodiscussedandtheAPDLprogramiswroteThroughthecalculationofANSYS,thestressdistributi
4、onofwavyplateintheprocessofmanufacturingandrunningwasobtainedItfillsupthebankinthefieldsofstressanalysis,andprovidesreferencetotheprocessofmanufacturingandrunningItisthefirsttimetointroducenodenodemodeltosimulatethespotw
5、eldconnectionwithMPCI84elementThespotweldradiusistakenintoaccountinthissimulationmethodandavoidsfinelocalmeshcomparingwiththeconventionalalgorithmAutomaticprojectionisusedintheconstructionofspotweldandthepositionofspotwe
6、ldcallbedecidedinanywhereSealweldissimilartospotweld,SOitCallbesimulatedbytheconnectionofsomespotweldsInthispaper,twodifferentstructureofwavyplateareanalyzedindetail:wavyplatewithoutsealweldandwavyplatewithsealweldTheres
7、ultofsimulationindicatedthatthedeformedshapeobtainedbysimulationwassimilartothefigureofmanufacturingThedistributionsofstressesalongsomecertainmappedpathswereexaminedEquivalentstressnearbythespotweldisgreaterotherplaceand
8、thereisobviousstressconcenThestrengthofthewavyplateisreinforcedbythesealweldThereliabilityofspotweldsofthewavyplateisinvestigatedbybrittlefailurecriterionanditcoincidessatisfactorilywinlexperimentalresultByuseofelectrica
9、ltestmethod,thestressonthesurfaceofwavyplateundervariouspressuresWasmeasuredTheaccuraciesofthenumerieaIsimulationresultshavebeenverifledbycomparingwiththestressesmeasureresultsItindicatesthatthesimulationmethodforspotwel
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