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Proceedings Paper

Develoment of 2D simulation model for laser welding
Author(s): Sadao Fujii; Nobuyuki Takahashi; S. Sakai; Tokuhiro Nakabayashi; Mikio Muro
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Paper 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.

Paper Details

Date Published: 7 February 2000
PDF: 11 pages
Proc. SPIE 3888, High-Power Lasers in Manufacturing, (7 February 2000); doi: 10.1117/12.377023
Show Author Affiliations
Sadao Fujii, Kawasaki Heavy Industries, Ltd. (Japan)
Nobuyuki Takahashi, Kawasaki Heavy Industries, Ltd. (Japan)
S. Sakai, Kawasaki Heavy Industries, Ltd. (Japan)
Tokuhiro Nakabayashi, Kawasaki Heavy Industries, Ltd. (Japan)
Mikio Muro, Kawasaki Heavy Industries, Ltd. (Japan)

Published in SPIE Proceedings Vol. 3888:
High-Power Lasers in Manufacturing
Xiangli Chen; Tomoo Fujioka; Akira Matsunawa, Editor(s)

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