abstract

• The two-dimensional modelling of the laser welding process is discussed. The simulation model takes into account the heat balance and fluid dynamics. The melt front is described by a simplified melt front model, taking latent heat into account. The numerical solution method is based on the finite element method, using FEMLAB™ as a basic code. Preliminary results are compared with experimental camera observations. The inclusion of latent heat into the model is shown to be of considerable importance with respect to both meltpool dimensions and meltpool shape. The latent heat causes the meltpool to close in a V-shape, leaving a clear V-shape pattern on the melt bead. This effect has also been demonstrated in the experimental observations with a CMOS camera.

authors

• De Lange Dirk Frederik
• Meijer J.
• Postma S.

publication date

• 2003-01-01

published in

• ICALEO 2003 - 22nd International Congress on Applications of Laser and Electro-Optics, Congress Proceedings  Proceedings

keywords

• Cameras; Laser beam welding; Numerical methods; CMOS camera; Heat balance; Meltpool; Numerical solution method; Simulation model; Two-dimensional modelling; V shape; Welding process; Latent heat

Digital Object Identifier (DOI)

• 10.2351/1.5060021

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