基于ANSYS的钛合金管口激光焊接有限元模拟  

Research on Simulation of Laser Welding for BT20 Ti Alloy Mouthpiece

作　　者：李世峰[1] 李永堂[1] 陈素玲[1] 白光辉[1] 宋建丽[1] 

机构地区：[1]太原科技大学,山西太原030024

出　　处：《铝加工》2008年第6期14-18,共5页Aluminium Fabrication

摘　　要：基于热弹塑性有限元方法,建立激光焊接过程的热力学计算模型,利用三维有限元分析软件ANSYS,开发其APDL二次语言,使用"生死单元"技术,实现了对BT20钛合金管口激光焊接过程温度场和应力场的有限元模拟。结合数值计算,对有限元模拟问题进行分析,并讨论了激光焊接过程采用瞬间空冷10s后,试件内部的应力分布情况。The thermodynamics model of laser welding process is established based on the thermal elastic-plastic finite element method （FEM） ; secondary APDL language was developed by three dimensional FEM ANSYS. FEM simulation is analyzed combining with numerical calculation. Stress distribution of specimen after instantaneous air-cooled 10s during laser welding is discussed as well.

关 键 词：有限元法 激光焊接 温度场 应力场 瞬间空冷 

分 类 号：TG456.7[金属学及工艺—焊接]