Numerical simulation of laser beam welding using an adapted intensity distribution

2017 ◽  
Vol 29 (2) ◽  
pp. 022405 ◽  
Author(s):  
Stefan Liebl ◽  
Christian Stadter ◽  
Andreas Ganser ◽  
Michael F. Zaeh
Keyword(s):  
Numerical Simulation ◽  
Laser Beam ◽  
Intensity Distribution ◽  
Laser Beam Welding

Prediction of laser beam welding-induced distortions and residual stresses by numerical simulation for aeronautic application

2009 ◽  
Vol 209 (6) ◽  
pp. 2907-2917 ◽  
Author(s):  
Muhammad Zain-ul-Abdein ◽  
Daniel Nelias ◽  
Jean-François Jullien ◽  
Dominique Deloison
Keyword(s):  
Numerical Simulation ◽  
Residual Stresses ◽  
Laser Beam ◽  
Laser Beam Welding

Numerical simulation of full-penetration laser beam welding of thick aluminium plates with inductive support

2011 ◽  
Vol 45 (3) ◽  
pp. 035201 ◽  
Author(s):  
Marcel Bachmann ◽  
Vjaceslav Avilov ◽  
Andrey Gumenyuk ◽  
Michael Rethmeier
Keyword(s):  
Numerical Simulation ◽  
Laser Beam ◽  
Laser Beam Welding ◽  
Full Penetration ◽  
Inductive Support

Numerical Simulation of Deformations in T-Joint Welded by the Laser Beam

2013 ◽  
Vol 58 (4) ◽  
pp. 1391-1396 ◽  
Author(s):  
W. Piekarska ◽  
M. Kubiak ◽  
Z. Saternus
Keyword(s):  
Numerical Simulation ◽  
Solid State ◽  
Laser Beam ◽  
Phase Transformations ◽  
Laser Beam Welding ◽  
Thermomechanical Properties ◽  
Engineering Software ◽  
Kinetics Of ◽  
Fortran Programming Language ◽  
Structural Strain

Abstract Numerical simulation of deformations in laser welded T-joint is carried out in this study. The analysis is performed using Abaqus FEA engineering software. Additional author’s numerical subroutines, written in FORTRAN programming language are used in computer simulations where models of the distribution of movable laser beam heat source, kinetics of phase transformations in solid state as well as thermal and structural strain are implemented. Thermomechanical properties of welded material changing with temperature are taken into account in the analysis. Presented results of numerical simulations performed for the laser beam welding of two perpendicularly arranged sheets include temperature distribution, kinetics of phase transformations in solid state, thermal and structural strain as well as estimated welding deformations.

scholarly journals Laser beam welding setup for the coaxial combination of two laser beams to vary the intensity distribution

2022 ◽  
Author(s):  
M. Möbus ◽  
P. Woizeschke
Keyword(s):  
Laser Beam ◽  
Penetration Depth ◽  
Intensity Distribution ◽  
Laser Beam Welding ◽  
Sample Surface ◽  
Laser Beams ◽  
Deep Penetration ◽  
Focal Position ◽  
Laser Systems ◽  
Laser Sources

AbstractDeep-penetration laser beam welding is highly dynamic and affected by many parameters. Several investigations using differently sized laser spots, spot-in-spot laser systems, and multi-focus optics show that the intensity distribution is one of the most influential parameters; however, the targeted lateral and axial intensity design remains a major challenge. Therefore, a laser processing optic has been developed that coaxially combines two separate laser sources/beams with different beam characteristics and a measuring beam for optical coherence tomography (OCT). In comparison to current commercial spot-in-spot laser systems, this setup not only makes it possible to independently vary the powers of the two laser beams but also their focal planes, thus facilitating the investigation into the influence of specific energy densities along the beam axis. First investigations show that the weld penetration depth increases with increasing intensities in deeper focal positions until the reduced intensity at the sample surface, due to the deep focal position, is no longer sufficient to form a stable keyhole, causing the penetration depth to drop sharply.

Numerical simulation of weld pool geometry in laser beam welding

2000 ◽  
Vol 33 (6) ◽  
pp. 662-671 ◽  
Author(s):  
W Sudnik ◽  
D Radaj ◽  
S Breitschwerdt ◽  
W Erofeew
Keyword(s):  
Numerical Simulation ◽  
Laser Beam ◽  
Weld Pool ◽  
Laser Beam Welding ◽  
Weld Pool Geometry
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