Structural Behavior of an EN AW-6060 Profile during and Immediately after Welding by a Laser-Laser-Hybrid System
This paper describes the analysis of thermal and mechanical effects during welding and the following cooling-phase on a welded structure. An off-the-shelf aluminum-profile, as used in other simulation sub-projects of the research center, was chosen as a sample part for the simulation tests. Taking up an important production scenario of lightweight-production, the frontal closing of two profiles is modeled. The development of residual stresses and the distortion is investigated by a thermo-mechanical FE-simulation. The virtually examined process is provided by a hybrid, bifocal laser system consisting of both an Nd:YAG-laser and a high power diode laser (HPDL). For comparison, a single Nd:YAG-process was simulated, too. The theoretically different generation of residual stresses can be verified within the simulation.
Matthias Kleiner, Jürgen Fleischer, Michael Zäh and Marco Schikorra
M. F. Zäh and S. Roeren, "Structural Behavior of an EN AW-6060 Profile during and Immediately after Welding by a Laser-Laser-Hybrid System", Advanced Materials Research, Vol. 10, pp. 133-142, 2006