Application of heat source model based on ray tracing method in laser welding

WANG Ren-ping; LEI Yong-ping; SHI Yao-wu

doi:10.3969/j.issn.1001-3806.2011.01.010

In order to simulate accurate change of free surface of keyhole and the corresponding temperature distribution in laser deep penetration welding, heat source model conformed to laser penetration welding physical process was inferred using ray tracing method. Using the heat source model, a three-phase unified control equation of vapor phase, liquid phase and solid phase was established during laser deep penetration welding. The dynamic change process and its corresponding temperature distribution of keyhole can be calculated by tracing free surface of keyhole using the volume of fluid method. A conclusion is drawn that the computational results agree well with experimental results.

Application of heat source model based on ray tracing method in laser welding

Corresponding author: LEI Yong-ping, yplei@bjut.edu.cn;

1. School of Material Science and Engineering, Beijing University of Technology, Beijing 100124, China

Received Date: 2010-03-04

Accepted Date: 2010-04-13

Available Online: 2011-01-25

Abstract: In order to simulate accurate change of free surface of keyhole and the corresponding temperature distribution in laser deep penetration welding, heat source model conformed to laser penetration welding physical process was inferred using ray tracing method. Using the heat source model, a three-phase unified control equation of vapor phase, liquid phase and solid phase was established during laser deep penetration welding. The dynamic change process and its corresponding temperature distribution of keyhole can be calculated by tracing free surface of keyhole using the volume of fluid method. A conclusion is drawn that the computational results agree well with experimental results.

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Reference (15)

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Application of heat source model based on ray tracing method in laser welding

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