基于组合热源模型的波导管火焰钎焊数值模拟.pdfVIP

《热加工工艺》202丨年6月第50卷第11期

基于组合热源模型的波导管火焰钎焊数值模拟

张春，牛子良，张满意

(中船重工第八研究院，江苏南京211153)

摘要：单一热源模型通常很难准确地反映具有复杂结构焊接件的焊接温度场。以薄壁波导管火焰钎焊为例提出

r一个描述火焰钎焊体、面组合的高斯热源模型，焊接件薄壁处采用高斯面热源模型，厚壁处采用高斯体热源模型。根

据此热源模型，利用有限元分析软件MSC.Marc和FORTRAN语言编写的热源模型用户子程序，计算了波导管的焊接

温度场、应力场和变形。最后对波导管火焰钎焊的仿真变形与实验变形进行比较，结果表明，组合热源模型能够比较准

确地模拟波导管火焰钎焊过程。

关键词：火焰钎焊；组合热源模型；薄壁波导管；有限元分析

DOI:10.14158/j.cnki.1001-3814.

中图分类号：TG454文献标识码：A文章编号：1001-3814(2021)11-0157-04

NumericalSimulationofFlameBrazingofWaveguide

BasedonCombinedHeatSourceModel

ZHANGChun,NIUZiliang,ZHANGManyi

(No.8ResearchInstituteofCSIC,Nanjing211153,China)

AbstractGenerally,asingleheatsourcemodelisdifficulttoaccuratelyreflecttheweldingtemperaturefieldofwelding：

partswithcomplexstructure.Takingflamebrazingofthin-walledwaveguideasanexample,aheatsourcemodelwhich

combinedGaussbodyandsurfaceheatsourcewasproposed.Gausssurfaceheatsourcemodelwasusedforthethinwallparts,

andGaussbodyheatsourcemodelwasusedforthethickwallparts.Accordingtotheheatsourcemodel,thewelding

temperaturefield,stressfieldanddeformationofwaveguidewascalculatedbyfiniteelementsoftwareMSC.Marcandheat

sourcemodelusersubroutinecompiledbyFORTRAN.Finally,thesimulationdeformationandexperimentaldefonnationof

waveguideflamebrazingwerecompared,theresultsshowthatthecombinedheatsourcemodelcanaccuratelysimulatethe

flamebrazingprocessofwaveguide.

Key