基于ANSYS的GMAW温度场计算  

Calculated GMAW temperature field based on ANSYS

作　　者：雷玉成[1] 张成[1] 程晓农[1] 胡小俊 冯雅明[1] 

机构地区：[1]江苏大学材料科学与工程学院,江苏镇江212013 [2]镇江宝华半挂车配件有限公司,江苏镇江212013

出　　处：《焊接学报》2004年第4期31-34,共4页Transactions of The China Welding Institution

基　　金：江苏省高技术研究项目 (BG2 0 0 2 0 2 1)

摘　　要：根据传热学、流体力学、物理冶金等理论 ,建立了运动电弧下熔化极气体保护焊 (GMAW )的三维非稳态熔池的数学模型。在数学模型的基础上建立了GMAW堆焊的有限元模型 ,并使用通用有限元软件ANSYS对熔池温度场进行了计算 ,在计算的过程对有限元模型进行了非均匀网格划分 ,加入了熔滴对熔池的能量和表面变形的影响 ,采用了双高斯热源叠加的双峰热源分布模型 ,应用有限元生死单元的处理方法。并通过不同工艺参数下的工艺试验的熔宽和熔深的测量值与ANSYS计算值进行了比较 ,熔池的熔宽和熔深的误差均控制在 8%以内。结果表明 ,使用ANSYS和使用双峰分布的热流来计算GMAW温度场均是可靠和可行的。Based on principle of heat transfer, fluid dynamics and physical metallurgy, three-dimensional dynamic weld pool mathematical model of gas metal arc welding (GMAW) with locomotory arc was built. A finite element model was setup based on the mathematical model, and the weld pool temperature was calculated using universal finite element method soft ANSYS. Unsymmetrical mesh was used in the calculation, and influence of melting drop on the weld pool energy and exterior distortion was considered. Double-apex model of double gauss heat source was adopted and the dead-birth method was used. The error was controlled within 8%. The calculated value and experimental value of weld width and weld depth with different technical parameter were compared. The result indicates that it is credible and feasible using ANSYS to calculate GMAW temperature field and introducing double-apex heat flux.

关 键 词：熔化极气体保护焊 温度场 有限元 GMAW 熔池 数学模型 ANSYS 

分 类 号：TG444.7[金属学及工艺—焊接] TG40