Experimental investigation and finite element simulation of laser beam welding induced residual stresses and distortions in thin sheets of AA 6056-T4

2010 ◽  
Vol 527 (12) ◽  
pp. 3025-3039 ◽  
Author(s):  
Muhammad Zain-ul-abdein ◽  
Daniel Nélias ◽  
Jean-François Jullien ◽  
Dominique Deloison
Keyword(s):  
Experimental Investigation ◽  
Finite Element ◽  
Residual Stresses ◽  
Laser Beam ◽  
Finite Element Simulation ◽  
Laser Beam Welding ◽  
Thin Sheets ◽  
Element Simulation

scholarly journals Finite element simulation of magnesium alloys laser beam welding

2010 ◽  
Vol 210 (9) ◽  
pp. 1131-1137 ◽  
Author(s):  
Asma Belhadj ◽  
Jamel Bessrour ◽  
Jean-Eric Masse ◽  
Mahmoud Bouhafs ◽  
Laurent Barrallier
Keyword(s):  
Finite Element ◽  
Laser Beam ◽  
Finite Element Simulation ◽  
Magnesium Alloys ◽  
Laser Beam Welding ◽  
Element Simulation

Finite Element Simulation of Laser Beam Welding Induced Residual Stresses and Distortions in a T-Joint Configuration for Aeronautic Structures

2009 ◽  
Author(s):  
Muhammad Zain-ul-abdein ◽  
Daniel Ne´lias ◽  
Jean-Franc¸ois Jullien ◽  
Dominique Deloison
Keyword(s):  
Finite Element ◽  
Residual Stresses ◽  
Laser Beam ◽  
Boundary Conditions ◽  
Laser Beam Welding ◽  
Temperature Fields ◽  
Heat Transfer Analysis ◽  
Small Scale ◽  
Joint Configuration ◽  
Simulation Results

Laser beam welding has found its application in the aircraft industry for the fabrication of fuselage panels in a T-joint configuration. However, the inconveniences like distortions and residual stresses are inevitable consequences of welding. The effort is made in this work to experimentally measure and numerically simulate the distortions induced by laser beam welding of a T-joint with industrially used thermal and mechanical boundary conditions on the thin sheets of aluminium 6056-T4. Several small scale experiments were carried out with various instrumentations to establish a database necessary to verify the simulation results. Finite element (FE) simulation is performed with Abaqus and the conical heat source is programmed in FORTRAN. Heat transfer analysis is performed to achieve the required weld pool geometry and temperature fields. Mechanical analysis is then performed with industrial loading and boundary conditions so as to predict the distortion and the residual stress pattern. A good agreement is found amongst the experimental and simulation results.

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