Develoment of 2D simulation model for laser welding

Sadao Fujii; Nobuyuki Takahashi; S. Sakai; Tokuhiro Nakabayashi; Mikio Muro

doi:10.1117/12.377023

7 February 2000 Develoment of 2D simulation model for laser welding

Sadao Fujii, Nobuyuki Takahashi, S. Sakai, Tokuhiro Nakabayashi, Mikio Muro

Proceedings Volume 3888, High-Power Lasers in Manufacturing; (2000) https://doi.org/10.1117/12.377023
Event: Advanced High-Power Lasers and Applications, 1999, Osaka, Japan

Abstract

Laser welding includes many complicated phenomena such as absorption of laser light on material surface, phase transition from solid to liquid and from liquid to gas, laser light absorption and refraction within plasma, and so on. Two- dimensional unified simulation model was developed for laser welding of thick plate, and verification test using 4kW-YAG laser was carried out. Thermal-hydraulic phenomena of welding pool and keyhole are solved numerically using CIP (Cubic- Interpolated Propagation) and C-CUP (CIP-Combined Unified Procedure) method based on conservative equations of the multi-phase and multi-component fluids. Multiple reflection of laser light on the keyhole surface, absorption and refraction of laser light within the plasma are treated by ray tracing method. The availability of the model was confirmed to compare the results of experiments with numerical analysis.

Citation Download Citation

Sadao Fujii, Nobuyuki Takahashi, S. Sakai, Tokuhiro Nakabayashi, and Mikio Muro "Develoment of 2D simulation model for laser welding", Proc. SPIE 3888, High-Power Lasers in Manufacturing, (7 February 2000); https://doi.org/10.1117/12.377023

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