Accurate Prediction of Large Ductile Tearing in Dissimilar Material Welds Using a Non-Local Gurson Model

The experimental assessment of ductile failure of Dissimilar Materials Welds (DMW) of NPP components can be challenging. For instance, the European project ADIMEW [1] has shown the technical complexity of the bending set-up on a DMW join at 300°C.

Such experiments are so scarce that their analysis is highly valuable to quantify the validity of alternative methods for assessing the ductile failure. This paper presents the application of the numerical simulation of ductile failure with a local approach in the case of the ADIMEW mock-up and discusses its validity.