GTAW耦合模型数值模拟研究进展.docx

GTAW耦合模型数值模拟研究进展
摘要
钨极氩弧焊（GTAW）是一种常见的焊接工艺，具有高质量、高效率、高稳定性等优点。随着计算机技术的进步，数值模拟方法在焊接工艺中得到广泛应用。本文综述了近年来GTAW焊接过程的数值模拟研究进展，包括耦合模型的发展、数值模拟方法的选择和实验验证等方面。结果表明，通过耦合多物理场模型，可以更准确地模拟GTAW焊接过程，预测焊缝的质量和性能。同时，需要注意选择合适的数值模拟方法和参数，以保证模拟结果的可靠性和准确性。未来，GTAW焊接过程的数值模拟研究还需进一步拓展，以适应不同焊接材料和工艺条件的需求。
关键词：GTAW；耦合模型；数值模拟；焊缝质量；实验验证
Introduction
GTAWisacommonlyusedweldingprocess,whichusesatungstenelectrodetoproduceanelectricarcformeltingthemetalworkpiecetoformaweld.Duetoitshighquality,highefficiencyandhighstability,GTAWhasbeenwidelyusedinvariousindustriessuchasaerospace,automobileandshipbuilding.However,thequalityandperformanceoftheweldjointareaffectedbymanyfactors,suchastheweldingparameters,thematerialpropertiesandtheambientconditions.Therefore,itisnecessarytodevelopareliableandaccuratenumericalsimulationmethodtopredicttheweldingprocessandoptimizetheweldingparameters.
Inrecentyears,thecouplingmodelhasbecomeanimportantresearchtopicinthefieldofnumericalsimulationofweldingprocess.Thecouplingmodelcanconsidermultiplephysicalfieldssuchasheattransfer,fluidflow,electromagneticfield,andmechanicaldeformationduringtheweldingprocess,whichisclosertotheactualweldingprocessandcanprovidemoreaccuratepredictionresults.Inaddition,theselectionofnumericalsimulationmethodsandtheexperimentalverificationofthesimulationresultsarealsoimportantfactorstoensurethereliabilityandaccuracyofthesimulation.
Inthispaper,wewillreviewtherecentresearchprogressofnumericalsimulationofGTAWweldingprocess,includingthedevelopmentofcouplingmodels,theselectionofnumericalsimulationmethods,andtheexperimentalverificationofsimulationresults.Throughthisreview,wehopetoprovideareferenceforresearchersandengineerstobetterunderstandandapplynumericalsimulationmethodsinGTAWweldingprocess.
DevelopmentofCouplingModels
Thecouplingmodelisamathematicalmodelthatcombinesmultiplephysicalfieldsinvolvedintheweldingprocess,anditsdevelopmentisoneofthehottopicsinthefieldofnumericalsimulationofweldingprocess.Thecouplingmodelcandescribetheinteractionandfeedbackbetweendiff