深熔激光焊新型热源模型的研究  

Pesearch on a new type of heat source model on laser deep welding

作　　者：孙钦德[1] 李萌盛[1] 宋荣武[1] 

机构地区：[1]合肥工业大学材料科学与工程学院,安徽合肥230009

出　　处：《焊接技术》2010年第12期11-14,共4页Welding Technology

摘　　要：综合考虑激光深熔焊的工艺特点和几何参数,建立了三维锥体热源模型和高斯面热源相组合的热源模型。利用大型有限元分析软件ANSYS的热分析模块及其自带的APDL语言编写数值分析程序,模拟了激光深熔焊的三维瞬态温度场,并与实际的焊接试验对比分析,结果表明,建立的热源模型能够较好地反映了激光焊的深熔特性,特别是熔池的"螺钉状"结构,为进一步研究激光焊的数值模拟奠定基础。Consideration of the deep penetration laser process features and geometric parameters,a combined heatsource model by 3-D cone heat source model and gaussian surface heat source were established.By using ANSYSsoftware of thermal analysis module and its own APDL language,simulated the deep penetration laser three-dimensional transient temperature field,the results showed that the heat source model establishment could betterreflect deep penetration laser welding'screw shape'structure compared to the actual welding experiments,andmade the foundation for the further study of laser welding of numerical simulation.

关 键 词：组合热源模型 激光深熔焊 三维瞬态温度场 

分 类 号：TG456.7[金属学及工艺—焊接] O242[理学—计算数学]