平板搭接双焊缝MARC元模拟

平板搭接双焊缝MARC元模拟(读书报告、研究报告)考核科目:焊接过程建模基础学生所在院:材料科学与工程(系)学生姓名学号离平板搭接焊缝双侧焊(搭接40mm)各个点坐标。(建立模型过程中采用国际单位制m)(1)生成点PTS:ADD000000000DUPLICATETRANSLATIONS00POINTSALL:EXISTPTS:ADD000DUPLICATETRANSLATIONS00POINTS(2)连线，生成二维模型如下图(1)所示：(3)二维网格划分IONSIXDIVISIONSDIVISIONSPLLYCURVEDIVISIONS边界，右键确定NSxyzFACTORSxyz的节点到板的中心，得到下OMESHONS00REPETITION25LEXISTLLSETTINGSETTINGMATERIALPROPERTIESUNGERSMODULUSOISSONSRATIOMASSDENSITY7800PLASTICITY:ELASTIC-PLASTICTHERMALEXP.1.2E-5TRANSFERONDUCTIVITYCIFICHEATMASSDENSITY7800DALLEXISTMODELINGTOOLSWELDPATHSNEW(weldpath1)PATHINPUTMETHODNODES:ADDORIENTATIONINPUTMETHODNODESADDNEW(weldpath2)PATHINPUTMETHODNODES:ADDORIENTATIONINPUTMETHODNODESADDWELDFILLERSNEWELEMENTSADDWADDBOUNDARYCONDITIONSWALOREVOLUMEWELDFLUXPOWER2600CIENCYIDTHHFORWARDLENGTHRLENGTHELOCITYWELDPATHWeldpath1EMENTAddALL:SETOK(apply1)WELUMEWELDFLUXPOWER00YTHDLENGTHHTYWELDPATHWeldpath1ddLSETWLMCOEFFICIENTNKTEMPERATURED ICALNTSPLACEMENTXSADDICALNTLACEMENTY (apply4)ODESADD，确定(apply5)WHANICALLACEMENTDISPLACEMENTZODESADD，确定(apply6)LOADCASESCOUPLEDQUASI-STATICCONVERGENCETESTINGDISPLACEMENTSLESISPLACEMENTTOLERANCEMAXERRORINTEMPERATUREESTIMATE30TOTALLOADCASETIME25NTTIMESTEPRSSTEPS5NEWloadcase)TICCETESTINGEMENTSISPLACEMENTTOLERANCEMAXERRORINTEMPERATUREESTIMATE30TOTALLOADCASETIME25NTTIMESTEPRSSTEPS5WTICCETESTINGEMENTSISPLACEMENTTOLERANCEMAXERRORINTEMPERATUREESTIMATE30TOTALLOADCASETIME000ADAPTIVETEMPERATURERSMAX#INCREMENTS500INITIALTIMESTEP1ILABLENALYSISOPTIONSCITYPROCEDUREASSCAPACITYalentVonMisesStressitor30S云纹图(焊接由焊缝一转移到焊缝二)S30S时第二道焊缝1)熔池位置的横向应力很小，这是由于此时材料软化造成。2)电弧的前端位置为压缩应力，这是由于该处材料受热膨胀，而受周围材分时从密到疏的方向。网格划分找不到闭合单元因为线