CO_2焊热源特性的反演分析  

Inversion analysis of CO_2 welding heat source characteristic

作　　者：于成奎[1] 于有生[1] 黄应涛[1] 韩洪伟[1] 

机构地区：[1]武汉理工大学材料科学与工程学院,湖北武汉430070

出　　处：《焊接技术》2007年第4期22-24,共3页Welding Technology

基　　金："九五"国家重点科技攻关项目资助(95-02-07-08-01)

摘　　要：采用反演分析法,结合软件ANSYS的参数化程序设计语言APDL,对CO2焊进行三维动态、非线性温度场模拟,得到熔池长、熔宽和熔深等参数,与焊接试验得到的相应实际参数进行比较分析。通过大量的模拟比较,利用极限分析方法,得出CO2焊接中热源集中系数的取值范围,为深入了解焊接过程热、应力本质提供了一些依据。Using inverse analysis method and parameter language APDL of simulation software ANSYS ,the 3dgraphics dynamic and nonlinear analysis of carbon dioxide welding have been done, the length of melting pole, melting breadth and melting depth were calculated and educed , which were compared with the trim size data of experiment. Trough lots of simulation and comparision, the interval numerical valued of Heat Source focus modulus in CO2 Welding were educed using limit analysis method, which offer a foundation to deeply research on heat and stress of welding.

关 键 词：焊接温度场 数值模拟 反演分析 

分 类 号：O242[理学—计算数学] TG444.73[理学—数学]