Micro transition to model cracking phenomenas during multipasses welding processes

Arnaud Duchosal , Traian Branza , Cyril Bordreuil (1) , Frederic Deschaux-Beaume (1) , Philippe Lours , Gilles Fras (1)

1 LMGC - Laboratoire de Mécanique et Génie Civil

The nucleation of cracks during welding process is of main importance in order to assess the lifetime prediction of the component that is made. Due to the complexity of the loading of the material during the process, a two scale numerical model is developped. The two scales are (i) the structural level and (ii) the microstructural level. A macroscopic criteria is developped and a simultion is performed to look at the influence of the process parameters (initial temperature, input energy, thermal boundary conditions,...). Then a microstructural ¯nite element model is developped.

Domaines: Mécanique des matériaux [physics.class-ph]; Mécanique des matériaux [physics.class-ph]

Arnaud Duchosal, Traian Branza, Cyril Bordreuil, Frederic Deschaux-Beaume, Philippe Lours, et al.. Micro transition to model cracking phenomenas during multipasses welding processes. 8th International conference on computational plasticity COMPLASS VIII, 2005, Barcelona, Spain. pp.890-893. ⟨hal-00562568⟩