Keyhole Modeling during Laser Deep Penetration Welding

被引：4
|
作者：
Wang, Renping [1 ]
Lei, Yongping [1 ]
Shi, Yaowu [1 ]
机构：
[1] Beijing Univ Technol, Sch Mat Sci & Engn, Beijing, Peoples R China
来源：
APPLIED MECHANICS AND MECHANICAL ENGINEERING, PTS 1-3 | 2010年 / 29-32卷
关键词：
Laser welding; keyhole; free surface; numerical simulation; DYNAMICS; POOL;
D O I：
10.4028/www.scientific.net/AMM.29-32.252
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
In order to accurately simulate the process of laser deep penetration welding, a mathematical model to describe laser deep penetration welding was developed by using the heat source derived from the ray-tracing model, and taking account into the effect of keyhole on welding pool. With all the governing equations including continuity, momentum and energy equation, the VOF method is adopted to trace the free surface of the molten pool. Numerical simulation was conducted by FLUENT 6.3 software package. The simulation results show that the formation of keyhole in the weld is caused by recoil pressure.
引用
收藏
页码：252 / 257
页数：6
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