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大型船体舷侧分段装焊顺序仿真及其变形预测研究.docx

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大型船体舷侧分段装焊顺序仿真及其变形预测研究 论文题目：大型船体舷侧分段装焊顺序仿真及其变形预测研究 Abstract: Withtheincreasingdemandsforlarge-scaleshipconstruction,itbecomescrucialtodevelopefficientweldingmethodsfortheassemblyofshipsectionswithoutcausingsignificantdeformation.Inthisstudy,weproposeasimulation-basedapproachtodeterminetheoptimalweldingsequencefortheconstructionoflargeshiphulls.Byconsideringthewelding-induceddeformation,weaimtopredictandminimizethedistortionoftheshipsectionsduringtheassemblyprocess.Thisresearchcontributestoimprovingtheefficiencyandqualityintheshipbuildingindustry. Introduction: Large-scaleshipconstructioninvolvestheassemblyofnumeroussectionsthatareweldedtogethertoformthefinalshiphull.However,theweldingprocesscaninducesignificantdeformation,affectingtheoverallqualityandstructuralintegrityoftheship.Therefore,itiscrucialtodetermineanoptimalweldingsequencethatminimizesdistortion.Inthispaper,weproposeasimulation-basedapproachtosimulatetheweldingprocessandpredictthedeformationoftheshipsections.Theresultsobtainedcanbeusedtooptimizetheweldingsequenceandreducetheoveralldistortion. Methodology: 1.Collectionofdata:Inordertodevelopanaccuratesimulationmodel,extensivedatacollectionisnecessary.Thisincludesinformationonmaterialproperties,weldingparameters,andgeometricdimensionsoftheshipsections. 2.FiniteElementAnalysis(FEA):Thecollecteddataisusedtoconstructafiniteelementmodelthatsimulatestheweldingprocess.FEAisapowerfulnumericaltechniquethatcanaccuratelypredictthedeformationofcomplexstructures.Inthisstudy,thewelding-inducedthermalandstructuralstressesaresimulatedusingFEA. 3.Weldingsequenceoptimization:Ageneticalgorithmisemployedtodeterminetheoptimalweldingsequence.Thealgorithmconsidersvariousfactors,suchasweldlocation,jointconfiguration,andcoolingtime,tominimizedistortion.Thealgorithmiterativelyevaluatesdifferentweldingsequencesandselectstheonewiththeleastpredicteddeformation. 4.Validation:Theeffectivenessoftheproposedapproachisvalidatedbycomparingthepredicteddeformationwiththeactualdeformationobser