T型焊接结构多道焊的数值模拟研究.docx

T型焊接结构多道焊的数值模拟研究
摘要
本文基于T型焊接结构多道焊的数值模拟研究，对焊接过程中的温度场、应力场、变形等问题进行探讨和分析，为焊接工程的实践应用提供理论指导。
首先，基于ANSYS有限元软件对T型焊接结构进行建模，确定材料参数和边界条件。然后，在建立的模型中进行热力耦合分析，得到焊接过程中的温度场分布图，并分析不同参数对温度场的影响。接下来，根据得到的温度场分布图，通过静力学分析得到焊接过程中的应力场分布，并分析不同参数对应力场的影响。最后，分析焊接过程中的变形问题，评估不同参数下T型焊接结构的变形程度，为实际焊接工程提供参考。
研究结果表明，不同焊接参数对T型焊接结构的温度场、应力场和变形程度均有影响。合理设置焊接参数可控制焊接结构的变形，提高焊接质量和工作效率，为焊接工程的实践应用提供了理论指导。
关键词：T型焊接结构；多道焊；数值模拟；温度场；应力场；变形
Abstract
Thisstudyisbasedonthenumericalsimulationofmulti-passweldingofT-shapedweldedstructure,anddiscussesandanalyzestheproblemsoftemperaturefield,stressfieldanddeformationduringtheweldingprocess,providingtheoreticalguidanceforthepracticalapplicationofweldingengineering.
Firstly,basedontheANSYSfiniteelementsoftware,theT-shapedweldedstructureismodeled,andthematerialparametersandboundaryconditionsaredetermined.Then,athermal-structuralcouplinganalysisiscarriedoutintheestablishedmodeltoobtainthetemperaturefielddistributionmapduringtheweldingprocess,andtheinfluenceofdifferentparametersonthetemperaturefieldisanalyzed.Next,accordingtotheobtainedtemperaturefielddistributionmap,thestressfielddistributionduringtheweldingprocessisobtainedthroughstaticanalysis,andtheinfluenceofdifferentparametersonthestressfieldisanalyzed.Finally,thedeformationproblemduringtheweldingprocessisanalyzed,andthedeformationlevelofT-shapedweldedstructureunderdifferentparametersisevaluated,providingreferenceforpracticalweldingengineering.
Theresultsshowthatdifferentweldingparametershaveaninfluenceonthetemperaturefield,stressfieldanddeformationlevelofT-shapedweldedstructure.Reasonablesettingofweldingparameterscancontrolthedeformationofweldedstructures,improveweldingqualityandworkefficiency,andprovidetheoreticalguidanceforthepracticalapplicationofweldingengineering.
Keywords:T-shapedweldedstructure;multi-passwelding;numericalsimulation;temperaturefield;stressfield;deformation.
1.引言
Weldingtechnologyisoneoftheimportanttechnologiesinthemanufacturingindustry,whichhasawiderangeofapplicationsinthefieldsofaircraft,equipment