Simulation numérique du soudage de grandes structures par une approche locale/globale

Abstract : A local/global approach has been developed to determine the welding residual distortions of large structures. This method consists in calculating the plastic strains on a local model and projecting them to a global model. The distortions due to welding are obtained through a simple elastic analysis. The objective of this article is to study the conditions which need to be respected in the definition of the local model in order to get results, useful for the subsequent elastic analysis of the whole structure. In this article, the principle of the local/global approach is presented firstly and secondly the problems proposed by this approach are described. Finally, the last part is devoted to the definition of the local model.
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Yonggang Duan, Frederic Boitout, Jean-Baptiste Leblond, Jean-Michel Bergheau. Simulation numérique du soudage de grandes structures par une approche locale/globale. 8e Colloque national en calcul des structures, CSMA, May 2007, Giens, France. ⟨hal-01508996⟩

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