基于旋转GAUSS曲面体热源模型的激光焊接热过程的数值模拟  

Numerical simulation of the laser welding by using the Rotary-Gauss body heat source model

作　　者：张瑞华[1] 片山聖二[2] 内藤恭章[2] 樊丁[1] 

机构地区：[1]兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室,甘肃兰州730050 [2]大阪大学接合科学研究所

出　　处：《电焊机》2007年第5期51-54,共4页Electric Welding Machine

基　　金：教育部春晖计划资助项目(Z2004-1-62009);博士点专项基金资助项目(20040731001)

摘　　要：利用旋转GAUSS曲面体新型热源模型,忽略深熔激光焊时小孔对传热的影响,建立了移动激光热源作用下的三维数学模型。采用PHOENICS3.4软件,模拟了SUS304不锈钢深熔激光焊接热过程的温度场和熔池熔合线形状,得到了激光深熔焊接时的温度场分布规律和“钉头”状的熔池形状,数值模拟结果与实验结果基本吻合。A mathematical model to describe moving laser welding was developed by using the Rotary-Gauss body heat source model and neglecting the effect of keyilole on thermal conduct.Numerical simulation was conducted by PHOENICS 3.4 software.The model was applied to laser welding processing of SUS 304 stainless steel.The shape of molten pool and the temperature field were analyzed.The simulation results show that the shape of mohen pool looks like ＂nailhead＂ shape.It＇s provided good agree with the practice welding results.

关 键 词：激光焊接 旋转GAUSS曲面体 PHOENICS 

分 类 号：TG40[金属学及工艺—焊接]